Backward Inclined Blowers

NIS-CO Backward Inclined Blowers are built with these features:

Class 1 performance cataloged to 5" WG static pressure. Class 2 performance cataloged to 8.5" WG static pressure. Air delivery ranges from 509 CFM to 32,172 CFM.

Non-overloading performance — the backwardly inclined blade wheel gives a brake horsepower that levels off at a point to allow economical selection of motors that will not overload if system pressure drops. The top four sizes have airfoil blades.

Easy installation and maintenance — the self-contained, completely packaged units allow easy access to motor, drive and bearings for ease in installation, lubrication, belt adjustment and wiring.

Rugged construction—heavy gauge all-welded steel construction. Discharge position on all sizes may be rotated to any of eight 45° positions.

CERTIFIED PERFORMANCE RATINGS

NIS-CO Backward Inclined Blowers certifies that the “ULTRAFAN-PAK 2000” Backward Inclined Blowers shown herein are licensed to bear the AMCA Seal. The ratings shown

• Fan shall be single width, single housing shall be easily rotated to sheave. The belts shall be oil and inlet with backward inclined flat any of eight standard positions. heat resistant. blade wheel on size: 105

• The fan shall have self-aligning • Fan to be arrangement 10, Class I through 245.

ball bearings and the shaft shall or Class II construction (as required).

matched to the fan load and • All fans shall bear the AMCA seal

•

The fan shall be of welded and furnished at the specified voltage, for air performance. bolted, heavy gauge steel phase and enclosure.

• Fan to be model “B” as construction coated with NIS-CO • The fan shall have a drive with a manufactured by NIS-CO Backward Inclined Blowers’ electrostatically applied cast iron adjustable pitch motor Blowers (Hot Springs, NC).

baked polyester coating. The

1. Weather Cover

Covers entire drive side frame and motor. Eliminates need for penthouse or other protection outdoors. Fastens

securely with screws.

2. Belt Guard

Covers the drives and entire frame end. Constructed of heavy gauge expanded metal mesh with welded

steel frame. Securely

fastened with screws to Backward Inclined Blower

3. Automatic Discharge Shutter

Self-contained in adapter sleeve and securely attached to fan discharge. All materials resistant to weather corrosion. Constructed to prevent

backdrafts and

at the bottom and gasketed.

Bolted Door

5. Vibration Rail Bases

Shock mounting rubber-in-shear rails or pads and spring rails or pads are

6. Other Accessories

All size Backward Inclined Blowers are available with extra features such as: inlet vanes, drain fittings, inlet or discharge screens, flanged inlets or outlets, and heat slingers. Protective coatings are also available. Also available in spark resistant construction.

Quick-Opening Door

RPM ³ TIP SPEED (FPM) = 2.749 x RPM OUTLET .636 Sq. Ft. Inside MAX. HP = .0387

_{ ⁽1000 ⁾

113/4" x 8" Outside

B-105

WHEEL DIAMETER —101/2" INLET .894 Sq. Ft. Inside MAX. RPM{127/8" Dia. Outside CL.1 3623

CL.2 4724

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
509 572 636	800 900 1000	965 1034 1106	0.03 0.04 0.05	1177 1227 1283	0.06 0.07 0.08	1369 1407 1451	0.09 0.10 0.11	1545 1574 1609	0.13 0.14 0.15	1709 1729 1757	0.16 0.18 0.19	— 1876 1898	— 0.22 0.23	— — 2159	— — 0.33	— — —	— — —	— — —	— — —	— — —	— — —
700 763 827	1100 1200 1300	1183 1261 1342	0.06 0.07 0.09	1345 1411 1481	0.09 0.11 0.12	1502 1557 1618	0.13 0.14 0.16	1651 1698 1750	0.17 0.18 0.20	1792 1832 1878	0.21 0.23 0.25	1926 1961 2001	0.25 0.27 0.29	2178 2204 2234	0.35 0.37 0.40	2412 2429 2452	0.46 0.48 0.51	— 2641 2658	— 0.60 0.62	— — 2853	— — 0.75
890 954 1018	1400 1500 1600	1425 1509 1594	0.10 0.12 0.14	1554 1629 1707	0.14 0.16 0.18	1682 1749 1820	0.18 0.20 0.23	1807 1867 1931	0.23 0.25 0.28	1928 1982 2040	0.27 0.30 0.33	2046 2095 2148	0.32 0.35 0.38	2270 2310 2354	0.42 0.45 0.49	2481 2514 2551	0.54 0.57 0.60	2680 2707 2739	0.66 0.69 0.73	2870 2892 2919	0.79 0.82 0.86
1081 1145 1208	1700 1800 1900	1681 1768 1856	0.17 0.19 0.22	1786 1867 1949	0.21 0.23 0.27	1892 1967 2044	0.25 0.28 0.32	1998 2067 2139	0.30 0.34 0.37	2102 2166 2233	0.36 0.39 0.43	2204 2264 2326	0.41 0.45 0.48	2403 2454 2509	0.52 0.56 0.60	2593 2637 2686	0.64 0.68 0.73	2774 2814 2857	0.77 0.82 0.86	2949 2983 3021	0.91 0.95 1.00
1272 1336 1399	2000 2100 2200	1945 2033 2121	0.25 0.29 0.33	2032 2116 2201	0.30 0.34 0.38	2122 2202 2283	0.35 0.39 0.43	2213 2288 2365	0.41 0.45 0.49	2302 2374 2447	0.46 0.51 0.55	2391 2459 2529	0.52 0.57 0.61	2567 2627 2690	0.65 0.70 0.75	2737 2792 2849	0.78 0;83 0.89	2903 2952 3003	0.91 0.97 1.03	3063 3107 3154	1.06 1.12 1.18
1463 1526 1654	2300 2400 2600	2210 2298 2475	0.37 0.41 0.51	2287 2373 2548	0.42 0.47 0.57	2365 2447 2615	0.47 0.52 0.63	2443 2523 2685	0.53 0.58 0.70	2522 2598 2754	0.60 0.65 0.76	2600 2673 2824	0.66 0.72 0.84	2755 2822 2962	0.80 0.86 0.98	2908 2970 3099	0.94 1.01 1.14	3058 3115 3235	1.09 1.16 1.30	3204 3257 3369	1.24 1.31 1.46
1781 1908 2035	2800 3000 3200	2655 2841 3027	0.63 0.77 0.93	2725 2902 3078	0.70 0.84 0.99	2786 2960 3135	0.76 0.90 1.07	2850 3018 3189	0.82 0.97 1.14	2915 3078 3244	0.90 1.05 1.21	2979 3138 3301	0.97 1.12 1.29	3108 3259 3414	1.13 1.28 1.46	3236 3379 3527	1.29 1.46 1.64	3363 3498 3639	1.46 1.63 1.82	3489 3617 3751	1.63 1.81 2.01
2162	3400	3200	1.09	3255	1.17	3311	1.25	3362	1.32	3413	1.40	3466	1.49	3573	1.66	3679	1.84	3785	2.04	3890	2.23

VOL.	OUTLET VEL.	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
CFM	FPM	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
1208	1900	3181	1.15	3335	1.31	3485	1.47	3630	1.63	3772	1.81	3910	1.98	4045	2.17	4176	2.36	—	—	—	—
1272	2000	3218	1.21	3368	1.36	3515	1.53	3657	1.70	3796	1.87	3931	2.05	4063	2.24	4192	2.43	4319	2.63	4443	2.83
1336	2100	3258	1.27	3405	1.43	3548	1.59	3687	1.76	3823	1.94	3955	2.12	4085	2.31	4212	2.50	4336	2.70	4458	2.91
1399	2200	3301	1.33	3444	1.50	3584	1.66	3720	1.84	3853	2.01	3983	2.20	4110	2.39	4235	2.58	4357	2.78	4477	2.99
1463	2300	3347	1.40	3487	1.57	3623	1.74	3756	1.91	3886	2.09	4013	2.28	4138	2.47	4261	2.67	4380	2.87	4498	3.08
1526	2400	3396	1.47	3532	1.64	3665	1.81	3795	1.99	3922	2.18	4047	2.37	4169	2.56	4289	2.76	4407	2.96	4523	3.17
1654	2600	3500	1.63	3629	1.81	3756	1.98	3880	2.17	4002	2.36	4122	2.55	4239	2.75	4355	2.96	4468	3.16	4580	3.38
1781	2800	3613	1.81	3736	1.99	3856	2.17	3975	2.36	4091	2.56	4206	2.76	4319	2.96	4430	3.17	4540	3.39	4647	3.60
1908	3000	3734	2.00	3850	2.19	3965	2.38	4078	2.58	4189	2.78	4299	2.98	4408	3.19	4515	3.41	4620	3.63	4724	3.85
2035	3200	3862	2.21	3972	2.41	4081	2.61	4189	2.81	4295	3.02	4401	3.23	4505	3.45	4607	3.67	4709	3.89	—	—
2162	3400	3995	2.44	4100	2.64	4204	2.85	4306	3.06	4408	3.28	4509	3.50	4609	3.72	4708	3.95	—	—	—	—
2290	3600	4134	2.68	4234	2.90	4332	3.12	4430	3.34	4528	3.56	4624	3.79	4720	4.02	—	—	—	—	—	—
2417	3800	4278	2.95	4372	3.18	4466	3.40	4560	3.63	4653	3.87	—	—	—	—	—	—	—	—	—	—
2544	4000	4425	3.24	4515	3.48	4605	3.71	4694	3.95	—	—	—	—	—	—	—	—	—	—	—	—
2671	4200	4576	3.56	4662	3.80	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not include transmission losses.

Performance ratings do not include the effectsof appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

  Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 3.207 x RPM OUTLET .858 Sq. Ft. Inside MAX. HP = .1009

_{ ⁽1000 ⁾

131/4" x 95/8" Outside

B-122

WHEEL DIAMETER —121/4" INLET .921 Sq. Ft. Inside MAX. RPM{131/4" Dia. Outside CL.1 2978

CL.2 3883

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
686 772 858	800 900 1000	756 804 856	0.04 0.05 0.06	955 981 1015	0.08 0.09 0.10	— 1155 1174	— 0.13 0.15	— — 1328	— — 0.10	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
944 1030 1115	1100 1200 1300	911 968 1025	0.08 0.09 0.11	1056 1101 1151	0.12 0.13 0.15	1201 1234 1273	0.16 0.18 0.20	1344 1367 1396	0.22 0.24 0.26	1482 1497 1518	0.28 0.30 0.32	— 1623 1638	— 0.36 0.39	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
1201 1287 1373	1400 1500 1600	1084 1143 1204	0.13 0.15 0.17	1203 1258 1313	0.18 0.20 0.23	1317 1364 1414	0.23 0.25 0.28	1431 1470 1513	0.28 0.31 0.34	1545 1576 1613	0.34 0.37 0.41	1657 1683 1713	0.41 0.44 0.48	1876 1891 1910	0.56 0.59 0.63	— 2090 2102	— 0.76 0.80	— — —	— — —	— — —	— — —
1459 1544 1630	1700 1800 1900	1266 1328 1392	0.20 0.23 0.26	1370 1428 1486	0.26 0.29 0.32	1466 1520 1575	0.32 0.35 0.39	1559 1608 1660	0.38 0.42 0.46	1653 1696 1743	0.44 0.48 0.53	1747 1785 1827	0.51 0.55 0.60	1934 1963 1995	0.67 0.71 0.76	2118 2138 2162	0.84 0.89 0.93	2296 2310 2327	1.03 1.07 1.13	— 2476 2488	— 1.28 1.33
1716 1802 1888	2000 2100 2200	1456 1520 1583	0.30 0.34 0.38	1545 1604 1664	0.36 0.40 0.45	1631 1688 1746	0.43 0.48 0.53	1713 1767 1822	0.50 0.55 0.61	1792 1843 1895	0.58 0.63 0.68	1871 1918 1967	0.65 0.70 0.76	2031 2070 2112	0.81 0.87 0.93	2190 2222 2257	0.99 1.04 1.11	2349 2374 2402	1.18 1.24 1.30	2504 2523 2546	1.39 1.45 1.51
1973 2059 2231	2300 2400 2600	1647 1711 1839	0.43 0.48 0.59	1725 1787 1913	0.50 0.55 0.67	1804 1863 1982	0.58 0.64 0.76	1879 1935 2051	0.66 0.72 0.85	1949 2004 2116	0.74 0.81 0.95	2018 2071 2179	0.83 0.89 1.04	2156 2203 2302	0.99 1.07 1.22	2295 2336 2424	1.18 1.25 1.41	2434 2469 2546	1.37 1.45 1.62	2573 2602 2669	1.58 1.66 1.83
2402 2574 2746	2800 3000 3200	1970 2104 2238	0.72 0.88 1.06	2040 2168 2296	0.82 0.98 1.15	2103 2227 2353	0.90 1.07 1.25	2168 2287 2408	1.00 1.17 1.36	2231 2347 2465	1.10 1.28 1.47	2291 2405 2521	1.20 1.38 1.58	2407 2515 2627	1.40 1.60 1.81	2520 2622 2728	1.60 1.81 2.04	2633 2727 2827	1.81 2.03 2.27	2747 2833 2926	2.03 2.25 2.50
2917	3400	2369	1.25	2423	1.35	2480	1.47	2531	1.57	2584	1.69	2638	1.81	2740	2.05	2838	2.29	2932	2.53	3025	2.77

VOL. CFM	OUTLET VEL. FPM	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
1802 1888 1973	2100 2200 2300	2670 2688 2710	1.67 1.74 1.81	2814 2828 2845	1.90 1.97 2.05	— 2965 2978	— 2.21 2.29	— — 3108	— — 2.55	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
2059 2231 2402	2400 2600 2800	2734 2792 2861	1.89 2.06 2.26	2865 2915 2976	2.13 2.30 2.50	2995 3036 3089	2.38 2.56 2.76	3122 3157 3203	2.63 2.82 3.03	3246 3275 3315	2.90 3.09 3.31	— 3392 3426	— 3.37 3.59	— 3507 3536	— 3.67 3.89	— 3621 3645	— 3.97 4.19	— — 3752	— — 4.50	— — 3858	— — 4.82
2574 2746 2917	3000 3200 3400	2939 3026 3118	2.48 2.74 3.02	3046 3125 3212	2.73 2.99 3.28	3153 3225 3305	2.99 3.25 3.54	3259 3325 3399	3.26 3.52 3.82	3365 3425 3494	3.54 3.81 4.10	3471 3525 3588	3.83 4.10 4.40	3575 3624 3682	4.13 4.40 4.71	3679 3723 3775	4.44 4.72 5.02	3782 3820 3869	4.76 5.04 5.35	3883 — —	5.08 — —
3089 3260 3432	3600 3800 4000	3216 3319 3425	3.33 3.67 4.04	3304 3402 3504	3.60 3.94 4.32	3393 3486 3584	3.87 4.22 4.61	3481 3569 3663	4.14 4.51 4.90	3570 3653 3742	4.43 4.80 5.20	3659 3737 3822	4.73 5.10 5.50	3748 3821 —	5.04 5.41 —	3837 — —	5.36 — —	— — —	— — —	— — —	— — —
3604 3775 3947	4200 4400 4600	3534 3645 3757	4.43 4.85 5.30	3610 3718 3828	4.73 5.16 5.63	3686 3791 —	5.03 5.47 —	3761 3863 —	5.33 5.79 —	3836 — —	5.63 — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
4118	4800	3871	5.78	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 3.534 x RPM OUTLET 1.049 Sq. Ft. Inside MAX. HP = .1567

_{ ⁽1000 ⁾

145/8" x 103/4" Outside

B-135

WHEEL DIAMETER —131/2" INLET 1.108 Sq. Ft. Inside MAX. RPM{141/2" Dia. Outside CL.1 2702

CL.2 3524

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
839 944 1049	800 900 1000	686 730 777	0.05 0.06 0.08	867 890 921	0.10 0.11 0.12	— 1048 1066	— 0.16 0.18	— — 1205	— — 0.24	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
1154 1259 1364	1100 1200 1300	827 878 930	0.09 0.11 0.13	958 999 1044	0.14 0.16 0.19	1090 1120 1155	0.20 0.22 0.25	1220 1241 1267	0.26 0.29 0.31	1345 1359 1378	0.34 0.36 0.39	— 1473 1486	— 0.44 0.47	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
1469 1574 1678	1400 1500 1600	984 1037 1092	0.15 0.18 0.21	1092 1141 1192	0.21 0.24 0.28	1195 1237 1283	0.27 0.31 0.34	1298 1334 1373	0.34 0.38 0.42	1402 1430 1463	0.42 0.45 0.49	1504 1527 1554	0.50 0.54 0.58	1702 1716 1733	0.68 0.72 0.77	— 1897 1907	— 0.93 0.97	— — —	— — —	— — —	— — —
1783 1888 1993	1700 1800 1900	1148 1205 1263	0.24 0.27 0.31	1243 1296 1348	0.31 0.35 0.39	1330 1379 1429	0.38 0.43 0.48	1415 1459 1506	0.46 0.51 0.56	1500 1539 1581	0.54 0.59 0.64	1585 1620 1657	0.62 0.67 0.73	1755 1781 1810	0.81 0.86 0.92	1922 1940 1962	1.02 1.08 1.13	2083 2096 2112	1.25 1.30 1.37	— 2247 2258	— 1.55 1.61
2098 2203 2308	2000 2100 2200	1321 1379 1437	0.36 0.41 0.46	1402 1456 1510	0.44 0.49 0.55	1480 1532 1584	0.53 0.58 0.64	1554 1603 1654	0.61 0.67 0.74	1626 1672 1720	0.70 0.76 0.83	1698 1741 1785	0.79 0.86 0.93	1843 1878 1916	0.98 1.05 1.13	1988 2016 2048	1.20 1.27 1.34	2131 2154 2180	1.43 1.50 1.58	2272 2290 2311	1.68 1.76 1.84
2413 2518 2727	2300 2400 2600	1495 1552 1668	0.52 0.58 0.72	1566 1622 1736	0.61 0.67 0.82	1637 1690 1798	0.70 0.77 0.92	1705 1756 1861	0.80 0.88 1.04	1769 1819 1920	0.90 0.98 1.15	1832 1879 1978	1.00 1.08 1.26	1957 1999 2089	1.21 1.29 1.49	2082 2119 2199	1.43 1.52 1.72	2209 2240 2311	1.67 1.76 1.96	2334 2361 2422	1.92 2.02 2.22
2937 3147 3357	2800 3000 3200	1787 1909 2030	0.88 1.07 1.28	1851 1967 2083	0.99 1.18 1.40	1908 2020 2135	1.10 1.30 1.52	1967 2075 2185	1.22 1.42 1.65	2024 2130 2236	1.34 1.55 1.79	2079 2182 2287	1.46 1.68 1.92	2184 2282 2384	1.70 1.94 2.20	2287 2379 2475	1.94 2.20 2.48	2389 2475 2566	2.20 2.46 2.75	2493 2571 2655	2.46 2.73 3.04
3567	3400	2150	1.52	2199	1.64	2250	1.78	2297	1.91	2345	2.05	2393	2.19	2487	2.49	2575	2.78	2660	3.08	2745	3.37

VOL. CFM	OUTLET VEL. FPM	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
2203 2308 2413	2100 2200 2300	2423 2440 2459	2.03 2.11 2.20	2553 2566 2582	2.31 2.39 2.48	2681 2690 2702	2.60 2.69 2.78	— — 2821	— — 3.10	— — 2936	— — 3.42	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
2518 2727 2937	2400 2600 2800	2481 2534 2596	2.29 2.50 2.74	2600 2645 2700	2.58 2.80 3.04	2717 2755 2803	2.88 3.10 3.35	2833 2864 2906	3.20 3.42 3.68	2946 2972 3008	3.53 3.76 4.01	3057 3078 3109	3.86 4.10 4.36	— 3183 3209	— 4.45 4.72	— 3285 3307	— 4.82 5.09	— — 3405	— — 5.47	— — 3501	— — 5.86
3147 3357 3567	3000 3200 3400	2667 2745 2830	3.02 3.33 3.67	2764 2836 2914	3.32 3.63 3.98	2861 2927 2999	3.63 3.95 4.30	2957 3017 3085	3.96 4.28 4.64	3054 3108 3170	4.30 4.62 4.98	3149 3198 3256	4.66 4.98 5.34	3244 3288 3341	5.02 5.35 5.71	3338 3378 3426	5.39 5.73 6.10	3431 3467 3510	5.78 6.12 6.49	3524 — —	6.17 — —
3776 3986 4196	3600 3800 4000	2919 3012 3108	4.05 4.46 4.90	2998 3087 3180	4.37 4.79 5.25	3079 3163 3252	4.70 5.13 5.60	3159 3239 3324	5.03 5.47 5.95	3239 3315 3396	5.38 5.83 6.31	3320 3391 3468	5.75 6.19 6.69	3401 3467 —	6.12 6.57 —	3481 — —	6.51 — —	— — —	— — —	— — —	— — —
4406 4616 4825	4200 4400 4600	3207 3307 3409	5.38 5.89 6.44	3276 3374 3474	5.74 6.27 6.83	3344 3440 —	6.10 6.65 —	3413 3505 —	6.47 7.03 —	3481 — —	6.84 — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
5035	4800	3512	7.02	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 3.927 x RPM OUTLET 1.280 Sq. Ft. Inside MAX. HP = .2575

_{ ⁽1000 ⁾

161/4" x 113/4" Outside

B-150

WHEEL DIAMETER —15" INLET 1.374 Sq. Ft. Inside MAX. RPM{161/8" Dia. Outside CL.1 2458

CL.2 3205

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
1024 1152 1280	800 900 1000	631 670 712	0.06 0.08 0.09	791 816 846	0.11 0.13 0.15	— 954 973	— 0.20 0.21	— — 1095	— — 0.30	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
1408 1536 1664	1100 1200 1300	757 803 850	0.11 0.13 0.15	880 918 959	0.17 0.20 0.22	998 1028 1061	0.24 0.27 0.30	1112 1135 1161	0.32 0.34 0.38	1222 1238 1259	0.42 0.43 0.46	— 1338 1353	— 0.55 0.57	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
1792 1920 2048	1400 1500 1600	898 947 997	0.18 0.20 0.23	1001 1045 1091	0.25 0.29 0.33	1098 1136 1177	0.34 0.37 0.41	1192 1225 1261	0.42 0.46 0.51	1283 1312 1343	0.51 0.55 0.61	1373 1397 1424	0.60 0.65 0.70	1546 1562 1582	0.85 0.87 0.91	— — 1734	— — 1.20	— — —	— — —	— — —	— — —
2176 2304 2432	1700 1800 1900	1047 1099 1151	0.27 0.31 0.35	1137 1184 1232	0.37 0.41 0.46	1220 1264 1309	0.46 0.51 0.57	1300 1340 1382	0.56 0.61 0.67	1378 1414 1453	0.66 0.72 0.78	1455 1487 1523	0.76 0.83 0.90	1605 1631 1660	0.97 1.05 1.13	1751 1771 1795	1.23 1.29 1.36	1892 1907 1925	1.56 1.59 1.64	— — 2053	— — 1.98
2560 2688 2816	2000 2100 2200	1203 1256 1309	0.39 0.44 0.49	1280 1329 1378	0.51 0.57 0.62	1355 1401 1448	0.63 0.69 0.76	1425 1469 1514	0.73 0.80 0.88	1493 1534 1577	0.84 0.92 0.99	1560 1599 1639	0.96 1.04 1.12	1692 1725 1760	1.21 1.30 1.38	1821 1849 1880	1.45 1.55 1.65	1947 1971 1997	1.71 1.81 1.92	2070 2089 2112	2.03 2.10 2.20
2944 3072 3328	2300 2400 2600	1362 1415 1521	0.55 0.61 0.75	1428 1479 1582	0.69 0.76 0.91	1496 1544 1641	0.83 0.90 1.06	1560 1606 1701	0.95 1.04 1.22	1621 1666 1757	1.08 1.17 1.36	1681 1723 1812	1.20 1.30 1.50	1797 1836 1917	1.48 1.57 1.79	1912 1947 2021	1.76 1.87 2.10	2025 2056 2122	2.03 2.16 2.42	2136 2163 2223	2.32 2.45 2.73
3584 3840 4096	2800 3000 3200	1629 1740 1850	0.91 1.10 1.31	1687 1792 1898	1.08 1.28 1.50	1741 1842 1946	1.25 1.45 1.68	1797 1894 1994	1.42 1.64 1.88	1851 1946 2042	1.58 1.82 2.07	1903 1996 2090	1.73 1.99 2.26	2003 2091 2182	2.03 2.31 2.62	2100 2183 2269	2.35 2.64 2.96	2195 2273 2355	2.69 2.98 3.31	2290 2362 2439	3.03 3.35 3.69
4352	3400	1953	1.52	2004	1.74	2050	1.94	2095	2.14	2140	2.35	2186	2.56	2274	2.95	2358	3.31	2440	3.68	2520	4.06

VOL.	OUTLET VEL.	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
CFM	FPM	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
2688	2100	2206	2.46	2320	2.87	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2816	2200	2225	2.53	2335	2.91	2443	3.35	—	—	—	—	—	—	—	—	—	—	—	—	—	—
2944	2300	2246	2.63	2353	2.99	2458	3.40	2562	3.86	—	—	—	—	—	—	—	—	—	—	—	—
3072	2400	2269	2.75	2373	3.09	2476	3.48	2576	3.92	2675	4.40	—	—	—	—	—	—	—	—	—	—
3328	2600	2322	3.04	2420	3.36	2517	3.71	2613	4.10	2707	4.54	2799	5.03	2890	5.55	—	—	—	—	—	—
3584	2800	2383	3.37	2476	3.71	2567	4.05	2657	4.40	2747	4.80	2835	5.23	2922	5.71	3008	6.23	3093	6.80	—	—
3840	3000	2450	3.72	2537	4.08	2624	4.44	2710	4.80	2794	5.17	2878	5.57	2961	6.00	3044	6.47	3125	6.99	3205	7.54
4096	3200	2522	4.08	2605	4.47	2687	4.86	2768	5.24	2849	5.63	2929	6.02	3008	6.42	3087	6.85	3164	7.32	—	—
4352	3400	2599	4.46	2677	4.88	2755	5.29	2833	5.71	2909	6.12	2985	6.53	3061	6.93	3136	7.35	—	—	—	—
4608	3600	2680	4.89	2754	5.31	2828	5.75	2902	6.19	2975	6.63	3048	7.07	3120	7.50	3192	7.93	—	—	—	—
4864	3800	2763	5.35	2835	5.78	2905	6.23	2975	6.70	3045	7.16	3115	7.63	3184	8.09	—	—	—	—	—	—
5120	4000	2850	5.86	2918	6.30	2986	6.76	3053	7.23	3120	7.72	3186	8.21	—	—	—	—	—	—	—	—
5376	4200	2938	6.41	3004	6.86	3069	7.33	3133	7.81	3197	8.31	—	—	—	—	—	—	—	—	—	—
5632	4400	3028	7.00	3092	7.47	3155	7.95	—	—	—	—	—	—	—	—	—	—	—	—	—	—
5888	4600	3120	7.64	3182	8.13	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 4.320 x RPM OUTLET 1.560 Sq. Ft. Inside MAX. HP = .4142

_{ ⁽1000 ⁾

173/4" x 13" Outside

B-165

WHEEL DIAMETER —161/2" INLET 1.67 Sq. Ft. Inside MAX. RPM{177/8" Dia. Outside CL.1 2235

CL.2 2914

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
1248 1404 1560	800 900 1000	573 609 648	0.08 0.09 0.11	719 742 769	0.14 0.16 0.18	— 867 885	— 0.24 0.26	— — 995	— — 0.36	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
1716 1872 2028	1100 1200 1300	688 730 773	0.13 0.16 0.18	800 835 871	0.21 0.24 0.27	908 934 965	0.29 0.33 0.37	1011 1031 1056	0.38 0.42 0.46	1111 1125 1144	0.51 0.53 0.56	— 1216 1230	— 0.67 0.69	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
2184 2340 2496	1400 1500 1600	817 861 906	0.21 0.25 0.28	910 950 992	0.31 0.35 0.40	998 1033 1070	0.41 0.45 0.50	1083 1114 1146	0.51 0.56 0.62	1167 1193 1221	0.61 0.67 0.73	1248 1270 1295	0.73 0.78 0.85	1406 1420 1438	1.03 1.06 1.11	— — 1576	— — 1.45	— — —	— — —	— — —	— — —
2652 2808 2964	1700 1800 1900	952 999 1046	0.32 0.37 0.42	1034 1077 1120	0.45 0.50 0.56	1109 1149 1190	0.56 0.62 0.68	1181 1218 1256	0.68 0.74 0.81	1252 1286 1321	0.80 0.87 0.94	1322 1352 1384	0.93 1.00 1.08	1459 1483 1509	1.18 1.27 1.36	1592 1610 1631	1.49 1.56 1.65	1720 1734 1750	1.88 1.92 1.98	— — 1866	— — 2.40
3120 3276 3432	2000 2100 2200	1094 1142 1190	0.47 0.53 0.60	1164 1208 1253	0.62 0.69 0.76	1231 1274 1317	0.76 0.83 0.91	1295 1335 1376	0.89 0.97 1.06	1357 1395 1434	1.02 1.11 1.20	1418 1453 1490	1.17 1.26 1.35	1538 1568 1600	1.46 1.57 1.67	1655 1681 1709	1.75 1.87 2.00	1770 1791 1815	2.07 2.19 2.32	1882 1900 1920	2.46 2.54 2.66
3588 3744 4056	2300 2400 2600	1238 1286 1383	0.67 0.74 0.91	1299 1345 1438	0.83 0.91 1.10	1360 1403 1492	1.00 1.09 1.29	1418 1460 1546	1.16 1.26 1.48	1474 1514 1597	1.30 1.41 1.65	1528 1567 1647	1.46 1.57 1.82	1634 1669 1743	1.79 1.90 2.16	1738 1770 1837	2.13 2.26 2.54	1841 1869 1929	2.46 2.61 2.92	1942 1967 2021	2.80 2.96 3.30
4368 4680 4992	2800 3000 3200	1481 1582 1682	1.10 1.33 1.59	1533 1629 1726	1.31 1.55 1.81	1583 1675 1769	1.51 1.76 2.04	1633 1722 1812	1.72 1.98 2.27	1682 1769 1857	1.91 2.20 2.51	1730 1814 1900	2.10 2.41 2.74	1821 1901 1983	2.46 2.79 3.16	1909 1984 2063	2.84 3.19 3.58	1996 2066 2141	3.25 3.61 4.01	2081 2147 2217	3.67 4.05 4.46
5304	3400	1776	1.84	1822	2.11	1864	2.35	1904	2.59	1946	2.85	1987	3.10	2068	3.57	2144	4.01	2218	4.45	2291	4.91

VOL.	OUTLET VEL.	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
CFM	FPM	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
3276	2100	2005	2.97	2109	3.47	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
3432	2200	2022	3.06	2123	3.53	2221	4.06	—	—	—	—	—	—	—	—	—	—	—	—	—	—
3588	2300	2042	3.18	2139	3.61	2235	4.12	2329	4.67	—	—	—	—	—	—	—	—	—	—	—	—
3744	2400	2063	3.33	2158	3.73	2251	4.21	2342	4.74	2432	5.33	—	—	—	—	—	—	—	—	—	—
4056	2600	2111	3.68	2200	4.07	2288	4.49	2375	4.96	2461	5.49	2545	6.08	2628	6.72	—	—	—	—	—	—
4368	2800	2166	4.08	2250	4.48	2334	4.90	2416	5.33	2497	5.80	2577	6.33	2656	6.91	2735	7.54	2812	8.22	—	—
4680	3000	2227	4.50	2307	4.94	2385	5.37	2463	5.81	2540	6.26	2617	6.74	2692	7.26	2767	7.83	2841	8.45	2914	9.13
4992	3200	2293	4.93	2368	5.41	2443	5.88	2517	6.34	2590	6.81	2663	7.28	2735	7.77	2806	8.29	2877	8.85	—	—
5304	3400	2363	5.40	2434	5.90	2505	6.41	2575	6.91	2645	7.40	2714	7.90	2783	8.39	2851	8.90	—	—	—	—
5616	3600	2436	5.91	2504	6.43	2571	6.96	2638	7.49	2705	8.02	2771	8.55	2836	9.07	2901	9.59	—	—	—	—
5928	3800	2512	6.47	2577	7.00	2641	7.54	2705	8.10	2768	8.67	2831	9.23	2894	9.79	—	—	—	—	—	—
6240	4000	2591	7.09	2653	7.62	2714	8.18	2775	8.75	2836	9.34	2896	9.93	—	—	—	—	—	—	—	—
6552	4200	2671	7.75	2731	8.30	2790	8.87	2848	9.45	2907	10.05	—	—	—	—	—	—	—	—	—	—
6864	4400	2753	8.47	2811	9.04	2868	9.62	—	—	—	—	—	—	—	—	—	—	—	—	—	—
7176	4600	2836	9.24	2892	9.83	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 4.778 x RPM OUTLET 1.899 Sq. Ft. Inside MAX. HP = .6444

_{ ⁽1000 ⁾

195/8" x 141/4" Outside

B-182

WHEEL DIAMETER—181/4" INLET 2.02 Sq. Ft. Inside MAX. RPM{195/8" Dia. Outside CL.1 2044

CL.2 2666

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
1519 1709 1899	800 900 1000	527 562 599	0.09 0.11 0.14	658 679 705	0.17 0.19 0.22	— 793 809	— 0.28 0.31	— — 911	— — 0.42	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
2089 2279 2469	1100 1200 1300	638 677 718	0.16 0.19 0.23	736 769 805	0.25 0.29 0.33	831 857 886	0.35 0.39 0.44	925 944 967	0.46 0.50 0.55	1016 1029 1047	0.59 0.63 0.68	— 1113 1125	— 0.77 0.82	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
2659 2849 3038	1400 1500 1600	759 801 844	0.27 0.31 0.36	842 880 919	0.38 0.43 0.49	918 952 988	0.49 0.55 0.62	993 1023 1055	0.61 0.67 0.74	1068 1093 1121	0.74 0.81 0.88	1142 1163 1186	0.88 0.95 1.02	1286 1299 1316	1.19 1.26 1.34	— 1432 1442	— 1.62 1.70	— — —	— — —	— — —	— — —
3228 3418 3608	1700 1800 1900	888 933 978	0.42 0.48 0.55	959 1000 1040	0.55 0.62 0.69	1026 1064 1103	0.69 0.76 0.85	1089 1124 1161	0.82 0.91 1.00	1151 1183 1217	0.96 1.05 1.15	1213 1242 1273	1.11 1.20 1.30	1335 1358 1383	1.43 1.53 1.63	1456 1473 1493	1.79 1.89 2.00	1574 1586 1601	2.18 2.28 2.39	— 1697 1707	— 2.70 2.82
3798 3988 4178	2000 2100 2200	1023 1068 1114	0.63 0.71 0.80	1082 1124 1167	0.77 0.86 0.96	1142 1182 1222	0.94 1.03 1.13	1198 1237 1275	1.09 1.20 1.31	1252 1289 1326	1.25 1.36 1.49	1305 1340 1375	1.41 1.53 1.66	1411 1440 1471	1.75 1.88 2.01	1515 1540 1567	2.12 2.25 2.39	1619 1639 1662	2.52 2.65 2.80	1721 1738 1756	2.94 3.08 3.23
4368 4558 4937	2300 2400 2600	1159 1204 1296	0.90 1.01 1.25	1210 1254 1344	1.06 1.18 1.44	1263 1305 1389	1.24 1.36 1.62	1315 1355 1436	1.43 1.56 1.83	1364 1403 1481	1.61 1.75 2.04	1411 1449 1525	1.79 1.94 2.25	1504 1538 1609	2.16 2.32 2.66	1596 1626 1691	2.54 2.71 3.07	1687 1714 1772	2.95 3.12 3.50	1778 1801 1853	3.39 3.57 3.95
5317 5697 6077	2800 3000 3200	1388 1481 1573	1.53 1.85 2.20	1434 1525 1615	1.74 2.07 2.45	1475 1563 1653	1.93 2.28 2.67	1518 1603 1689	2.14 2.49 2.90	1562 1643 1727	2.37 2.73 3.14	1604 1684 1765	2.60 2.98 3.40	1684 1760 1839	3.04 3.46 3.92	1761 1834 1909	3.48 3.93 4.42	1837 1905 1977	3.93 4.40 4.93	1912 1976 2044	4.39 4.89 5.43
6457	3400	1669	2.63	1706	2.87	1743	3.12	1777	3.35	1811	3.60	1847	3.86	1918	4.41	1986	4.96	2051	5.50	2115	6.03

VOL.	OUTLET VEL.	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
CFM	FPM	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
3988	2100	1834	3.54	1930	4.03	2023	4.54	—	—	—	—	—	—	—	—	—	—	—	—	—	—
4178	2200	1850	3.69	1942	4.18	2033	4.69	2122	5.23	—	—	—	—	—	—	—	—	—	—	—	—
4368	2300	1868	3.86	1957	4.35	2044	4.86	2131	5.40	2216	5.97	—	—	—	—	—	—	—	—	—	—
4558	2400	1888	4.04	1974	4.53	2059	5.04	2143	5.58	2226	6.15	2307	6.74	—	—	—	—	—	—	—	—
4937	2600	1934	4.43	2014	4.93	2094	5.45	2172	6.00	2251	6.57	2328	7.15	2405	7.77	2480	8.40	—	—	—	—
5317	2800	1987	4.88	2062	5.39	2136	5.92	2211	6.47	2284	7.04	2357	7.64	2430	8.25	2502	8.89	2573	9.54	2643	10.22
5697	3000	2046	5.38	2116	5.90	2186	6.44	2256	7.00	2325	7.58	2394	8.19	2463	8.81	2531	9.44	2599	10.10	2666	10.78
6077	3200	2110	5.95	2176	6.48	2241	7.03	2307	7.60	2372	8.19	2438	8.80	2503	9.42	2567	10.07	2631	10.73	—	—
6457	3400	2177	6.57	2240	7.12	2302	7.68	2364	8.26	2425	8.86	2487	9.48	2548	10.11	2610	10.77	—	—	—	—
6836	3600	2248	7.24	2307	7.81	2366	8.39	2425	8.99	2483	9.60	2542	10.23	2600	10.87	2658	11.53	—	—	—	—
7216	3800	2321	7.98	2378	8.57	2434	9.17	2490	9.79	2545	10.41	2601	11.05	2656	11.70	—	—	—	—	—	—
7596	4000	2396	8.76	2451	9.39	2504	10.02	2558	10.65	2611	11.29	2664	11.94	—	—	—	—	—	—	—	—
7976	4200	2473	9.60	2526	10.26	2577	10.92	2628	11.58	—	—	—	—	—	—	—	—	—	—	—	—
8356	4400	2551	10.49	2602	11.19	2652	11.88	—	—	—	—	—	—	—	—	—	—	—	—	—	—
8735	4600	2630	11.44	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

TIP SPEED (FPM) = 5.236 x RPM OUTLET 2.318 Sq. Ft. Inside MAX. HP = 1.0139 ^{RPM 3}

_{ ⁽1000 ⁾

211/2" x 157/8" Outside

B-200

WHEEL DIAMETER —20" INLET 2.435 Sq. Ft. Inside MAX. RPM{ 211/2" Dia. Outside CL.1 1866

CL.2 2432

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
1854 2086 2318	800 900 1000	492 524 558	0.12 0.15 0.18	610 632 658	0.22 0.26 0.29	716 731 751	0.34 0.38 0.42	— — 838	— — 0.56	— — 920	— — 0.70	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
2550 2782 3013	1100 1200 1300	594 632 670	0.21 0.25 0.30	686 717 750	0.33 0.38 0.43	774 799 827	0.47 0.53 0.58	856 877 901	0.62 0.68 0.75	934 951 971	0.77 0.84 0.91	— 1022 1039	— 1.00 1.09	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
3245 3477 3709	1400 1500 1600	710 750 791	0.35 0.41 0.47	784 820 857	0.49 0.56 0.63	857 888 921	0.65 0.72 0.80	926 954 984	0.82 0.90 0.99	994 1019 1045	1.00 1.08 1.18	1059 1081 1105	1.18 1.28 1.38	1182 1200 1219	1.56 1.67 1.79	— 1312 1328	— 2.09 2.23	— 1431	— — 2.68	— — —	— — —
3941 4172 4404	1700 1800 1900	833 875 917	0.55 0.63 0.73	895 933 972	0.71 0.80 0.90	955 991 1027	0.89 0.99 1.09	1015 1048 1081	1.08 1.18 1.29	1074 1104 1135	1.28 1.39 1.51	1131 1158 1187	1.49 1.61 1.73	1241 1264 1289	1.92 2.06 2.20	1346 1365 1387	2.37 2.53 2.68	1446 1463 1481	2.84 3.01 3.19	1542 1556 1572	3.33 3.51 3.71
4636 4868 5100	2000 2100 2200	960 1003 1046	0.83 0.94 1.06	1012 1053 1093	1.01 1.13 1.26	1064 1102 1141	1.20 1.33 1.47	1116 1152 1188	1.42 1.55 1.69	1167 1201 1235	1.64 1.77 1.92	1218 1249 1282	1.87 2.01 2.17	1316 1344 1373	2.35 2.51 2.68	1410 1435 1461	2.85 3.03 3.21	1502 1524 1547	3.37 3.57 3.77	1590 1609 1631	3.91 4.12 4.34
5331 5563 6027	2300 2400 2600	1089 1132 1220	1.20 1.34 1.67	1134 1176 1260	1.40 1.55 1.89	1180 1220 1301	1.61 1.77 2.12	1225 1263 1341	1.84 2.00 2.37	1271 1307 1381	2.08 2.25 2.63	1315 1350 1421	2.33 2.51 2.90	1403 1434 1500	2.86 3.05 3.46	1489 1517 1578	3.41 3.61 4.06	1572 1598 1654	3.98 4.20 4.68	1653 1677 1728	4.57 4.80 5.31
6490 6954 7418	2800 3000 3200	1308 1396 1485	2.05 2.49 2.98	1345 1431 1517	2.28 2.73 3.24	1382 1466 1550	2.53 2.99 3.51	1420 1501 1583	2.79 3.26 3.80	1457 1536 1616	3.06 3.55 4.09	1495 1571 1648	3.34 3.84 4.40	1568 1640 1714	3.93 4.46 5.04	1641 1709 1778	4.55 5.10 5.71	1713 1776 1842	5.20 5.78 6.42	1784 1843 1906	5.87 6.48 7.14
7881	3400	1573	3.54	1604	3.82	1635	4.10	1666	4.40	1697	4.71	1727	5.02	1789	5.69	1850	6.39	1911	7.12	1971	7.87

VOL.	OUTLET VEL.	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
CFM	FPM	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
4868	2100	1693	4.69	1774	5.27	1852	5.86	—	—	—	—	—	—	—	—	—	—	—	—	—	—
5100	2200	1712	4.92	1791	5.52	1867	6.13	1942	6.75	2016	7.39	—	—	—	—	—	—	—	—	—	—
5331	2300	1732	5.17	1809	5.78	1884	6.41	1957	7.05	2029	7.70	—	—	—	—	—	—	—	—	—	—
5563	2400	1754	5.42	1829	6.06	1902	6.70	1974	7.36	2044	8.03	2113	8.71	2180	9.40	—	—	—	—	—	—
6027	2600	1801	5.97	1873	6.63	1943	7.31	2011	8.01	2078	8.71	2144	9.42	2209	10.15	2273	10.88	2335	11.62	—	—
6490	2800	1853	6.55	1921	7.25	1988	7.97	2053	8.69	2118	9.43	2181	10.18	2243	10.94	2304	11.71	2365	12.48	2424	13.27
6954	3000	1909	7.19	1973	7.92	2037	8.67	2100	9.43	2162	10.20	2222	10.99	2282	11.78	2341	12.58	2399	13.39	—	—
7418	3200	1968	7.89	2030	8.65	2091	9.43	2151	10.22	2210	11.03	2268	11.85	2326	12.67	2382	13.51	—	—	—	—
7881	3400	2030	8.64	2089	9.43	2147	10.24	2205	11.07	2261	11.91	2318	12.76	2373	13.62	2427	14.49	—	—	—	—
8345	3600	2095	9.46	2152	10.28	2207	11.12	2262	11.98	2317	12.85	2370	13.73	2424	14.62	—	—	—	—	—	—
8808	3800	2163	10.35	2216	11.20	2270	12.07	2322	12.95	2375	13.85	2426	14.76	—	—	—	—	—	—	—	—
9272	4000	2232	11.32	2284	12.20	2335	13.09	2385	14.00	—	—	—	—	—	—	—	—	—	—	—	—
9736	4200	2304	12.37	2353	13.27	2402	14.19	—	—	—	—	—	—	—	—	—	—	—	—	—	—
10199	4400	2377	13.50	2424	14.43	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B –free inlet, ducted outlet.

Power Rating (BHP) does not include transmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and mostefficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 5.825 x RPM OUTLET 2.827 Sq. Ft. Inside MAX. HP = 1.8739

_{ ⁽1000 ⁾

24" x 173/8" Outside

B-222

WHEEL DIAMETER —221/4" INLET 3.015 Sq. Ft. Inside MAX. RPM{237/8" Dia. Outside CL.1 1661

CL.2 2166

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
2262 2544 2827	800 900 1000	428 456 486	0.15 0.18 0.21	536 553 574	0.27 0.30 0.35	— 645 659	— 0.45 0.50	— — 741	— — 0.67	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
3110 3392 3675	1100 1200 1300	517 550 584	0.25 0.30 0.36	598 624 653	0.39 0.45 0.51	677 697 720	0.56 0.62 0.69	753 768 787	0.73 0.80 0.88	827 838 852	0.93 1.00 1.09	— 905 916	— 1.22 1.30	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
3958 4241 4523	1400 1500 1600	619 655 691	0.42 0.49 0.57	683 714 746	0.59 0.67 0.76	746 773 802	0.77 0.86 0.95	808 831 857	0.97 1.06 1.16	870 889 911	1.18 1.28 1.39	930 946 965	1.40 1.51 1.63	1046 1058 1071	1.89 2.01 2.14	— — 1173	— — 2.69	— — —	— — —	— — —	— — —
4806 5089 5371	1700 1800 1900	727 764 801	0.66 0.76 0.88	779 813 848	0.86 0.97 1.09	832 863 894	1.06 1.18 1.31	883 912 941	1.28 1.40 1.54	935 961 988	1.51 1.64 1.79	986 1009 1034	1.75 1.89 2.04	1087 1105 1125	2.28 2.43 2.59	1185 1199 1215	2.84 3.00 3.18	— 1291 1303	— 3.62 3.81	— 1380 1389	— 4.27 4.47
5654 5937 6219	2000 2100 2200	838 876 913	1.00 1.13 1.28	883 918 954	1.22 1.36 1.52	927 960 994	1.45 1.60 1.76	971 1003 1035	1.69 1.85 2.02	1016 1045 1075	1.94 2.11 2.29	1060 1087 1115	2.21 2.38 2.57	1147 1171 1195	2.77 2.95 3.16	1233 1253 1275	3.37 3.57 3.78	1318 1335 1353	4.01 4.22 4.45	1401 1415 1430	4.68 4.91 5.14
6502 6785 7350	2300 2400 2600	951 989 1066	1.44 1.61 2.01	990 1027 1100	1.69 1.87 2.28	1029 1064 1134	1.94 2.14 2.56	1067 1101 1169	2.21 2.41 2.86	1106 1138 1203	2.49 2.70 3.16	1145 1175 1237	2.77 2.99 3.47	1221 1248 1305	3.37 3.61 4.11	1297 1322 1373	4.01 4.26 4.80	1373 1394 1441	4.69 4.95 5.51	1447 1466 1508	5.40 5.67 6.26
7916 8481 9046	2800 3000 3200	1143 1220 1297	2.46 2.98 3.57	1175 1250 1325	2.75 3.29 3.90	1206 1279 1353	3.06 3.61 4.24	1238 1309 1381	3.37 3.94 4.59	1270 1339 1409	3.68 4.28 4.94	1302 1368 1437	4.01 4.62 5.30	1365 1428 1492	4.69 5.33 6.05	1428 1487 1548	5.40 6.07 6.82	1491 1546 1603	6.14 6.85 7.62	1554 1604 1658	6.92 7.65 8.45
9612	3400	1375	4.24	1401	4.59	1428	4.95	1454	5.31	1480	5.69	1506	6.07	1559	6.84	1611	7.65	1663	8.48	1715	9.34

VOL.	OUTLET VEL.	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
CFM	FPM	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
5937	2100	1493	5.62	1570	6.37	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
6219	2200	1506	5.87	1580	6.64	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
6502	2300	1521	6.14	1593	6.91	1664	7.71	—	—	—	—	—	—	—	—	—	—	—	—	—	—
6785	2400	1537	6.42	1607	7.21	1676	8.02	1743	8.86	—	—	—	—	—	—	—	—	—	—	—	—
7350	2600	1574	7.04	1640	7.84	1705	8.68	1769	9.54	1832	10.43	1894	11.35	—	—	—	—	—	—	—	—
7916	2800	1616	7.72	1678	8.55	1739	9.41	1800	10.30	1860	11.21	1919	12.15	1978	13.11	2036	14.10	2093	15.11	—	—
8481	3000	1663	8.48	1721	9.33	1779	10.22	1836	11.13	1893	12.07	1949	13.03	2005	14.01	2060	15.02	2115	16.05	—	—
9046	3200	1713	9.31	1768	10.19	1823	11.10	1877	12.04	1931	13.00	1984	13.99	2037	15.00	2090	16.03	2142	17.08	—	—
9612	3400	1767	10.23	1819	11.14	1870	12.08	1922	13.04	1973	14.02	2024	15.03	2074	16.07	2125	17.12	—	—	—	—
10177	3600	1823	11.23	1872	12.17	1921	13.13	1970	14.12	2019	15.13	2067	16.17	2115	17.23	2163	18.31	—	—	—	—
10743	3800	1882	12.32	1929	13.29	1975	14.29	2022	15.30	2068	16.34	2114	17.40	2160	18.48	—	—	—	—	—	—
11308	4000	1943	13.51	1987	14.51	2031	15.53	2076	16.58	2120	17.64	2164	18.73	—	—	—	—	—	—	—	—
11873	4200	2005	14.80	2048	15.82	2090	16.88	2132	17.95	—	—	—	—	—	—	—	—	—	—	—	—
12439	4400	2070	16.18	2110	17.25	2150	18.33	—	—	—	—	—	—	—	—	—	—	—	—	—	—
13004	4600	2135	17.68	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 6.414 x RPM OUTLET 3.458 Sq. Ft. Inside MAX. HP = 3.0246

_{ ⁽1000 ⁾

261/4" x 191/4" Outside

B-245

WHEEL DIAMETER —241/2" INLET 3.650 Sq. Ft. Inside MAX. RPM{ 263/8" Dia. Outside CL.1 1508

CL.2 1967

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.5 S.P.		.75 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		2 S.P.		2.5 S.P.		3 S.P.		3.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
3458 3804 4150	1000 1100 1200	444 473 503	0.26 0.31 0.37	523 545 570	0.42 0.48 0.55	600 616 635	0.61 0.68 0.76	674 685 700	0.82 0.90 0.98	— 752 762	— 1.13 1.23	— — 823	— — 1.49	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
4495 4841 5187	1300 1400 1500	534 566 599	0.44 0.52 0.61	596 623 652	0.63 0.72 0.82	657 680 705	0.85 0.94 1.05	717 736 758	1.08 1.18 1.30	776 792 810	1.33 1.44 1.57	833 846 862	1.59 1.71 1.85	— 951 962	— 2.31 2.45	— — —	— — —	— — —	— — —	— — —	— — —
5533 5879 6224	1600 1700 1800	632 665 699	0.71 0.82 0.95	682 712 743	0.93 1.06 1.19	732 759 788	1.17 1.31 1.45	781 806 832	1.43 1.57 1.73	831 853 876	1.70 1.85 2.02	879 899 920	1.99 2.15 2.32	975 990 1007	2.61 2.79 2.97	1067 1078 1091	3.29 3.47 3.67	— 1164 1174	— 4.21 4.42	— — —	— — —
6570 6916 7262	1900 2000 2100	733 767 802	1.09 1.24 1.41	775 807 840	1.34 1.51 1.68	817 847 878	1.61 1.79 1.98	859 887 916	1.90 2.08 2.28	901 927 954	2.20 2.39 2.60	943 967 992	2.51 2.71 2.93	1025 1046 1067	3.17 3.39 3.63	1106 1123 1142	3.89 4.12 4.37	1186 1200 1215	4.65 4.90 5.17	1263 1274 1287	5.46 5.72 6.00
7608 7953 8299	2200 2300 2400	836 871 906	1.59 1.79 2.00	873 906 939	1.88 2.09 2.32	909 941 973	2.18 2.40 2.64	946 975 1006	2.50 2.73 2.98	982 1010 1039	2.82 3.06 3.32	1018 1045 1073	3.16 3.41 3.68	1090 1114 1139	3.88 4.15 4.43	1162 1183 1205	4.64 4.92 5.23	1232 1251 1270	5.45 5.75 6.07	1302 1318 1335	6.30 6.61 6.95
8991 9682 10374	2600 2800 3000	976 1046 1117	2.49 3.05 3.70	1007 1075 1144	2.83 3.41 4.08	1038 1104 1171	3.17 3.78 4.48	1069 1132 1197	3.53 4.16 4.88	1099 1161 1224	3.90 4.55 5.29	1130 1190 1251	4.28 4.95 5.71	1191 1247 1304	5.07 5.78 6.58	1253 1304 1357	5.90 6.64 7.48	1313 1360 1411	6.77 7.55 8.42	1374 1417 1463	7.68 8.49 9.40
11066 11757 12449	3200 3400 3600	1188 1259 1331	4.44 5.26 6.20	1213 1283 1353	4.84 5.69 6.65	1238 1307 1375	5.26 6.13 7.11	1263 1330 1398	5.68 6.58 7.58	1289 1354 1420	6.12 7.04 8.06	1314 1377 1442	6.56 7.50 8.55	1364 1425 1487	7.47 8.45 9.54	1414 1472 1531	8.41 9.43 10.56	1463 1519 1576	9.39 10.45 11.62	1513 1566 1620	10.40 11.50 12.70
13140	3800	1402	7.23	1423	7.71	1445	8.20	1466	8.69	1487	9.19	1508	9.70	1550	10.74	1592	11.80	1634	12.90	1676	14.02

VOL.	OUTLET VEL.	4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
CFM	FPM	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
7262	2100	1358	6.87	1427	7.79	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
7608	2200	1370	7.18	1437	8.11	1503	9.07	—	—	—	—	—	—	—	—	—	—	—	—	—	—
7953	2300	1384	7.51	1449	8.45	1513	9.43	1576	10.44	—	—	—	—	—	—	—	—	—	—	—	—
8299	2400	1399	7.86	1462	8.82	1524	9.81	1585	10.83	1646	11.88	—	—	—	—	—	—	—	—	—	—
8991	2600	1434	8.62	1493	9.61	1551	10.62	1609	11.67	1666	12.76	1723	13.87	1778	15.01	—	—	—	—	—	—
9682	2800	1473	9.47	1528	10.48	1584	11.53	1638	12.61	1692	13.72	1746	14.86	1799	16.03	1851	17.23	1903	18.45	—	—
10374	3000	1516	10.41	1568	11.45	1620	12.53	1672	13.64	1723	14.78	1774	15.94	1825	17.14	1874	18.37	1924	19.63	—	—
11066	3200	1563	11.44	1612	12.52	1661	13.63	1710	14.77	1759	15.93	1807	17.13	1855	18.36	1902	19.62	1950	20.90	—
11757	3400	1612	12.57	1659	13.69	1705	14.83	1752	16.00	1798	17.20	1844	18.43	1889	19.69	1934	20.97	—	—	—	—
12449	3600	1664	13.82	1709	14.97	1753	16.14	1796	17.34	1840	18.58	1884	19.84	1927	21.12	—	—	—	—	—	—
13140	3800	1718	15.17	1760	16.36	1802	17.57	1844	18.80	1886	20.07	1927	21.36	—	—	—	—	—	—	—	—
13832	4000	1774	16.65	1814	17.87	1854	19.11	1894	20.38	1934	21.68	—	—	—	—	—	—	—	—	—	—
14524	4200	1832	18.24	1870	19.50	1908	20.78	1946	22.09	—	—	—	—	—	—	—	—	—	—	—	—
15215	4400	1891	19.96	1927	21.26	1963	22.58	—	—	—	—	—	—	—	—	—	—	—	—	—	—
15907	4600	1951	21.82	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 7.069 x RPM OUTLET 4.19 Sq. Ft. Inside MAX. HP = 3.15

_{ ⁽1000 ⁾

29" x 211/4" Outside

B-270

WHEEL DIAMETER —27" INLET 4.430 Sq. Ft. Inside MAX. RPM{ 29" Dia. Outside CL.1 1453

CL.2 1893

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.38 S.P.		.50 S.P.		.63 S.P.		.75 S.P.		.88 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		1.75 S.P.		2 S.P.		2.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
3352 3771 4190	800 900 1000	421 456 492	0.23 0.28 0.34	458 490 524	0.30 0.36 0.43	490 520 551	0.38 0.44 0.52	524 551 580	0.46 0.53 0.62	555 579 606	0.54 0.62 0.71	587 609 634	0.63 0.72 0.81	617 636 659	0.72 0.81 0.91	— 690 709	— 1.02 1.13	— — 759	— — 1.35	— — —	— — —	— — —	— — —	— — —	— — —
4609 5028 5447	1100 1200 1300	530 568 606	0.42 0.50 0.60	559 595 632	0.51 0.61 0.71	585 619 655	0.61 0.71 0.82	612 644 679	0.71 0.82 0.94	636 667 700	0.81 0.92 1.05	661 691 723	0.92 1.04 1.17	685 713 743	1.02 1.15 1.29	732 757 785	1.25 1.39 1.54	778 801 826	1.49 1.64 1.80	823 843 866	1.73 1.89 2.07	— 884 905	— 2.16 2.35	— 965 981	— 2.72 2.93
5866 6285 6704	1400 1500 1600	645 684 724	0.71 0.84 0.98	670 708 746	0.83 0.97 1.12	691 728 766	0.95 1.09 1.25	714 750 786	1.07 1.22 1.39	734 769 805	1.19 1.35 1.52	756 789 824	1.32 1.48 1.66	775 808 842	1.44 1.61 1.80	815 846 878	1.71 1.89 2.09	853 882 913	1.98 2.17 2.38	891 918 947	2.26 2.46 2.69	928 953 981	2.55 2.77 3.00	1000 1022 1046	3.15 3.39 3.65
7123 7542 7961	1700 1800 1900	764 804 845	1.14 1.32 1.51	785 824 864	1.29 1.47 1.68	804 842 881	1.42 1.62 1.83	823 861 899	1.57 1.77 1.99	841 878 915	1.71 1.92 2.15	860 896 933	1.86 2.08 2.31	877 912 948	2.00 2.23 2.47	911 945 980	2.31 2.54 2.80	944 977 1011	2.62 2.87 3.14	977 1009 1041	2.93 3.20 3.48	1009 1039 1070	3.26 3.53 3.83	1072 1099 1128	3.93 4.23 4.55
8380 9218 10056	2000 2200 2400	885 967 1049	1.73 2.23 2.82	904 984 1065	1.90 2.42 3.02	920 999 1079	2.06 2.59 3.21	937 1015 1094	2.23 2.78 3.42	953 1030 1107	2.39 2.96 3.61	970 1045 1122	2.57 3.15 3.82	985 1059 1135	2.73 3.32 4.01	1015 1088 1162	3.08 3.70 4.41	1045 1115 1188	3.43 4.08 4.82	1074 1143 1213	3.78 4.46 5.23	1103 1169 1238	4.15 4.85 5.65	1158 1221 1287	4.89 5.65 6.50
10894 11732 12570	2600 2800 3000	1131 1214 1297	3.51 4.31 5.23	1146 1228 1310	3.73 4.55 5.48	1159 1240 1322	3.94 4.77 5.72	1173 1253 1334	4.16 5.01 5.98	1186 1265 1346	4.36 5.23 6.21	1200 1278 1358	4.59 5.47 6.47	1212 1290 1369	4.80 5.69 6.71	1237 1314 1391	5.23 6.16 7.20	1262 1337 1413	5.67 6.63 7.70	1286 1360 1435	6.11 7.10 8.21	1309 1382 1456	6.56 7.58 8.71	1355 1426 1498	7.47 8.54 9.74
13408 14246 15084	3200 3400 3600	1380 1463 1547	6.27 7.45 8.77	1392 1475 1558	6.54 7.74 9.08	1403 1485 1568	6.80 8.01 9.36	1415 1497 1579	7.07 8.30 9.67	1426 1507 1588	7.32 8.57 9.95	1438 1518 1599	7.60 8.86 10.26	1448 1528 1608	7.85 9.13 10.55	1470 1548 1628	8.38 9.69 11.14	1491 1568 1647	8.91 10.25 11.73	1511 1588 1666	9.44 10.81 12.33	1531 1607 1684	9.98 11.38 12.93	1571 1645 1721	11.06 12.53 14.13
15922 16760	3800 4000	1630 1714	10.25 11.88	1641 1724	10.57 12.22	1650 1733	10.87 12.54	1661 1743	11.19 12.88	1670 1752	11.49 13.19	1680 1761	11.82 13.54	1689 1770	12.12 13.85	1708 1788	12.74 14.51	1726 1806	13.37 15.17	1744 1823	14.00 15.83	1762 1840	14.63 16.49	1797 1874	15.89 17.82

VOL. CFM	OUTLET VEL. FPM	3 S.P.		3.5 S.P.		4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
5447 5866 6285	1300 1400 1500	— 1071 1089	— 3.79 4.05	— — 1154	— — 4.74	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
6704 7123 7542	1600 1700 1800	1110 1133 1158	4.33 4.63 4.96	1172 1193 1215	5.04 5.36 5.71	1233 1251 1271	5.78 6.12 6.49	— 1309 1327	— 6.91 7.29	— 1365 1381	— 7.72 8.12	— — 1434	— — 8.97	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
7961 8380 9218	1900 2000 2200	1185 1212 1272	5.30 5.67 6.47	1240 1265 1321	6.08 6.46 7.32	1294 1317 1369	6.88 7.29 8.19	1347 1369 1417	7.70 8.14 9.08	1399 1419 1464	8.55 9.01 10.00	1450 1469 1510	9.43 9.90 10.93	1501 1517 1556	10.32 10.82 11.89	— 1566 1601	— 11.76 12.87	— — 1646	— — 13.87	— — 1690	— — 14.89	— — 1734	— — 15.93	— — —	— — —
10056 10894 11732	2400 2600 2800	1334 1400 1468	7.38 8.39 9.52	1381 1444 1509	8.27 9.34 10.52	1426 1487 1550	9.19 10.31 11.54	1471 1529 1590	10.13 11.30 12.58	1515 1570 1629	11.09 12.31 13.64	1558 1611 1668	12.08 13.33 14.72	1601 1652 1706	13.08 14.38 15.81	1644 1692 1744	14.10 15.45 16.93	1686 1732 1782	15.15 16.54 18.06	1728 1771 1819	16.21 17.64 19.21	1769 1810 1856	17.29 18.77 20.37	1810 1848 1893	18.39 19.91 21.56
12570 13408 14246	3000 3200 3400	1538 1609 1682	10.78 12.16 13.68	1577 1647 1718	11.83 13.27 14.85	1616 1684 1753	12.91 14.40 16.04	1654 1720 1788	14.00 15.54 17.24	1691 1756 1822	15.11 16.71 18.45	1728 1791 1856	16.23 17.88 19.68	1765 1825 1889	17.37 19.08 20.92	1801 1860 —	18.54 20.29 —	1836 — —	19.72 — —	1872 — —	20.91 — —	— — —	— — —	— — —	— — —
15084 15922	3600 3800	1756 1831	15.35 17.17	1790 1864	16.58 18.46	1824 —	17.82 —	1857 —	19.08 —	1890 —	20.34 —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not include transmission losses.

Performance ratings do not include the effectsof appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 7.854 x RPM OUTLET 5.17 Sq. Ft. Inside MAX. HP = 5.33

_{ ⁽1000 ⁾

331/4" x 233/8" Outside

B-300

WHEEL DIAMETER —30" INLET 5.469 Sq. Ft. Inside MAX. RPM{321/4" Dia. Outside CL.1 1308

CL.2 1703

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.38 S.P.		.50 S.P.		.63 S.P.		.75 S.P.		.88 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		1.75 S.P.		2 S.P.		2.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
4136 4653 5170	800 900 1000	379 410 443	0.28 0.34 0.42	412 441 471	0.37 0.45 0.53	441 468 496	0.46 0.54 0.64	472 496 522	0.57 0.66 0.76	499 521 545	0.67 0.76 0.87	529 548 570	0.78 0.89 1.00	555 572 593	0.89 1.00 1.12	— 621 638	— 1.25 1.39	— — 683	— — 1.67	— — —	— — —	— — —	— — —	— — —	— — —
5687 6204 6721	1100 1200 1300	476 511 545	0.51 0.62 0.74	503 535 568	0.63 0.75 0.88	526 557 589	0.75 0.87 1.01	550 580 611	0.88 1.01 1.16	572 600 630	1.00 1.14 1.29	595 622 650	1.13 1.28 1.45	616 642 669	1.26 1.42 1.59	659 682 706	1.54 1.71 1.90	700 721 743	1.83 2.02 2.22	741 759 779	2.14 2.34 2.55	780 796 814	2.46 2.67 2.89	— 868 883	— 3.36 3.61
7238 7755 8272	1400 1500 1600	580 616 651	0.88 1.03 1.21	602 637 671	1.03 1.19 1.38	622 655 689	1.17 1.34 1.54	642 674 707	1.32 1.51 1.71	660 692 724	1.47 1.66 1.87	680 710 742	1.63 1.83 2.05	697 727 757	1.78 1.99 2.22	733 761 790	2.10 2.33 2.58	768 794 821	2.44 2.68 2.94	802 826 852	2.78 3.04 3.32	835 858 882	3.14 3.41 3.70	900 920 941	3.89 4.19 4.51
8789 9306 9823	1700 1800 1900	687 723 760	1.41 1.63 1.87	706 742 777	1.59 1.82 2.07	723 758 793	1.75 1.99 2.25	741 775 809	1.94 2.19 2.46	757 790 823	2.11 2.37 2.65	773 806 839	2.30 2.56 2.85	789 821 853	2.47 2.75 3.05	820 850 882	2.84 3.14 3.45	850 879 909	3.23 3.53 3.87	879 907 936	3.62 3.94 4.29	908 935 963	4.02 4.36 4.72	965 989 1015	4.85 5.22 5.61
10340 11374 12408	2000 2200 2400	796 870 943	2.13 2.75 3.47	813 885 958	2.35 2.98 3.73	828 899 970	2.54 3.19 3.96	843 913 984	2.75 3.43 4.21	857 926 996	2.95 3.64 4.45	872 940 1009	3.17 3.88 4.71	886 953 1021	3.37 4.10 4.94	913 979 1045	3.80 4.56 5.44	940 1004 1069	4.23 5.03 5.95	966 1028 1092	4.67 5.50 6.46	992 1052 1114	5.12 5.98 6.97	1042 1099 1158	6.04 6.97 8.02
13442 14476 15510	2600 2800 3000	1017 1092 1166	4.33 5.31 6.44	1031 1104 1178	4.60 5.61 6.76	1043 1116 1189	4.85 5.88 7.05	1056 1128 1200	5.13 6.17 7.37	1067 1138 1210	5.38 6.45 7.66	1079 1150 1221	5.66 6.74 7.98	1090 1160 1231	5.91 7.02 8.27	1113 1182 1252	6.45 7.59 8.88	1135 1203 1271	6.99 8.17 9.50	1157 1223 1291	7.54 8.75 10.12	1178 1243 1310	8.09 9.34 10.75	1219 1283 1347	9.21 10.53 12.01
16544 17578 18612	3200 3400 3600	1241 1316 1391	7.73 9.18 10.81	1252 1327 1401	8.07 9.54 11.19	1262 1336 1410	8.38 9.87 11.54	1273 1346 1420	8.72 10.23 11.92	1283 1356 1429	9.03 10.56 12.27	1293 1366 1438	9.37 10.92 12.65	1303 1375 1447	9.68 11.25 13.00	1322 1393 1464	10.33 11.94 13.73	1341 1411 1482	10.99 12.64 14.47	1359 1429 1499	11.64 13.34 15.20	1378 1446 1515	12.31 14.03 15.94	1413 1480 1548	13.64 15.45 17.43
19646 20680 21714	3800 4000 4200	1466 1542 1617	12.63 14.64 16.86	1476 1551 1626	13.03 15.06 17.30	1485 1559 1634	13.40 15.45 17.71	1494 1568 1642	13.80 15.87 18.16	1502 1576 1650	14.17 16.26 18.57	1511 1584 1658	14.57 16.68 19.01	1519 1592 1666	14.94 17.07 19.41	1536 1609 1681	15.71 17.89 20.27	1553 1624 1696	16.48 18.70 21.12	1569 1640 —	17.26 19.51 —	1585 1655 —	18.04 20.33 —	1616 1685 —	19.60 21.97 —

VOL. CFM	OUTLET VEL. FPM	3 S.P.		3.5 S.P.		4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
6721 7238 7755	1300 1400 1500	949 963 980	4.38 4.68 5.00	— 1025 1039	— 5.50 5.85	— — 1096	— — 6.73	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
8272 8789 9306	1600 1700 1800	999 1020 1042	5.35 5.72 6.11	1055 1073 1094	6.22 6.62 7.04	1110 1126 1144	7.13 7.55 8.01	1164 1178 1194	8.07 8.52 9.00	— 1228 1243	— 9.52 10.02	— — 1291	— — 11.07	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
9823 10340 11374	1900 2000 2200	1066 1091 1144	6.54 6.99 7.98	1115 1139 1188	7.49 7.98 9.03	1164 1185 1232	8.48 8.99 10.10	1212 1231 1275	9.50 10.04 11.20	1259 1277 1317	10.55 11.12 12.23	1305 1321 1359	11.63 12.22 13.49	1351 1366 1400	12.74 13.35 14.67	— 1409 1441	— 14.51 15.88	— — 1481	— — 17.12	— — 1521	— — 18.38	— — 1560	— — 19.66	— — 1599	— — 20.96
12408 13442 14476	2400 2600 2800	1200 1260 1321	9.10 10.35 11.75	1242 1299 1358	10.21 11.52 12.98	1283 1337 1395	11.34 12.72 14.24	1323 1375 1430	12.50 13.94 15.52	1363 1413 1466	13.69 15.18 16.83	1402 1450 1501	14.90 16.45 18.16	1441 1486 1535	16.14 17.74 19.51	1479 1522 1570	17.40 19.06 20.88	1517 1558 1603	18.69 20.40 22.28	1555 1593 1637	20.00 21.77 23.70	1592 1629 1670	21.33 23.15 25.14	1628 1663 1703	22.69 24.56 26.60
15510 16544 17578	3000 3200 3400	1384 1448 1513	13.29 15.00 16.87	1419 1482 1546	14.59 16.37 18.32	1454 1515 1577	15.92 17.76 19.78	1488 1547 1608	17.26 19.17 21.26	1522 1579 1639	18.63 20.61 22.76	1555 1611 1669	20.02 22.06 24.27	1588 1642 1699	21.43 23.53 25.81	1620 1673 —	22.87 25.03 —	1652 — —	24.32 — —	1684 — —	25.80 — —	— — —	— — —	— — —	— — —
18612 19646	3600 3800	1580 1647	18.93 21.18	1611 1677	20.44 22.76	1641 —	21.98 —	1671 —	23.53 —	1700 —	25.09 —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not includetransmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 8.639 x RPM OUTLET 6.26 Sq. Ft. Inside MAX. HP = 8.59

_{ ⁽1000 ⁾

353/8" x 257/8" Outside

B-330

WHEEL DIAMETER —33" INLET 6.618 Sq. Ft. Inside MAX. RPM{ 353/8" Dia. Outside CL.1 1189

CL.2 1548

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.38 S.P.		.50 S.P.		.63 S.P.		.75 S.P.		.88 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		1.75 S.P.		2 S.P.		2.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
5008 5634 6260	800 900 1000	344 373 403	0.34 0.42 0.51	373 400 428	0.45 0.54 0.64	401 425 451	0.56 0.66 0.77	428 450 474	0.68 0.79 0.91	454 474 496	0.81 0.93 1.06	480 497 518	0.94 1.07 1.21	505 520 539	1.08 1.21 1.36	— 565 580	— 1.52 1.68	— — 621	— — 2.02	— — 660	— — 2.37	— — —	— — —	— — —	— — —
6886 7512 8138	1100 1200 1300	433 464 496	0.62 0.75 0.90	456 486 516	0.76 0.90 1.06	478 507 536	0.91 1.06 1.22	500 527 554	1.06 1.21 1.39	520 546 573	1.21 1.38 1.57	540 565 591	1.37 1.55 1.74	560 583 608	1.53 1.72 1.93	599 620 642	1.87 2.07 2.30	637 655 676	2.22 2.44 2.69	673 690 708	2.59 2.83 3.09	709 724 740	2.98 3.23 3.50	— 789 803	— 4.07 4.38
8764 9390 10016	1400 1500 1600	528 560 592	1.06 1.25 1.47	547 578 610	1.24 1.44 1.66	565 596 627	1.42 1.63 1.86	583 613 643	1.60 1.82 2.07	601 629 658	1.78 2.01 2.27	618 645 674	1.97 2.21 2.48	634 661 689	2.16 2.41 2.69	667 692 718	2.55 2.82 3.12	698 722 747	2.95 3.25 3.56	729 751 775	3.37 3.68 4.02	759 780 802	3.81 4.13 4.49	819 836 856	4.71 5.07 5.46
10642 11268 11894	1700 1800 1900	625 658 691	1.70 1.97 2.26	642 674 706	1.91 2.19 2.50	658 689 721	2.13 2.42 2.73	673 704 735	2.34 2.64 2.97	688 718 749	2.56 2.87 3.21	703 732 763	2.77 3.10 3.45	717 746 776	3.00 3.33 3.69	745 773 802	3.45 3.80 4.18	773 800 827	3.91 4.28 4.69	800 825 852	4.38 4.78 5.20	826 850 876	4.87 5.28 5.72	877 900 923	5.87 6.32 6.80
12520 13772 15024	2000 2200 2400	724 791 858	2.59 3.33 4.21	739 804 871	2.83 3.60 4.51	753 817 883	3.08 3.87 4.80	767 830 895	3.33 4.14 5.10	780 843 906	3.58 4.42 5.39	793 855 918	3.83 4.69 5.69	806 867 929	4.08 4.97 5.99	831 890 951	4.60 5.53 6.59	855 913 972	5.12 6.09 7.20	879 935 993	5.65 6.67 7.82	902 957 1013	6.20 7.25 8.44	948 999 1053	7.31 8.44 9.72
16276 17528 18780	2600 2800 3000	926 993 1061	5.24 6.44 7.81	937 1004 1071	5.56 6.78 8.18	949 1015 1081	5.88 7.13 8.55	960 1025 1091	6.20 7.47 8.92	971 1036 1101	6.52 7.81 9.28	981 1046 1111	6.84 8.16 9.65	992 1056 1120	7.17 8.51 10.02	1012 1075 1138	7.82 9.20 10.77	1033 1094 1157	8.47 9.90 11.51	1052 1113 1174	9.13 10.61 12.26	1071 1131 1192	9.80 11.32 13.02	1109 1167 1225	11.15 12.76 14.55
20032 21284 22536	3200 3400 3600	1129 1197 1266	9.37 11.13 13.11	1139 1206 1274	9.76 11.55 13.55	1148 1216 1283	10.16 11.97 13.99	1158 1224 1291	10.55 12.39 14.43	1167 1233 1300	10.94 12.80 14.87	1176 1242 1308	11.34 13.22 15.32	1185 1250 1316	11.73 13.64 15.76	1203 1267 1332	12.52 14.48 16.65	1220 1283 1348	13.31 15.32 17.53	1237 1300 1363	14.11 16.16 18.43	1253 1315 1378	14.91 17.01 19.32	1285 1346 1408	16.53 18.72 21.12
23788 25040	3800 4000	1334 1402	15.31 17.75	1342 1410	15.78 18.24	1350 1418	16.24 18.73	1359 1426	16.71 19.22	1366 1434	17.17 19.71	1374 1441	17.64 20.20	1382 1448	18.11 20.70	1397 1463	19.04 21.68	1412 1478	19.98 22.66	1427 1492	20.92 23.65	1442 1506	21.86 24.64	1470 1533	23.75 26.62

VOL. CFM	OUTLET VEL. FPM	3 S.P.		3.5 S.P.		4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
8138 8764 9390	1300 1400 1500	863 876 891	5.30 5.66 6.05	— 932 944	— 6.66 7.08	— — 996	— — 8.15	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
10016 10642 11268	1600 1700 1800	908 927 948	6.47 6.92 7.40	959 976 994	7.53 8.01 8.53	1009 1024 1040	8.63 9.15 9.69	1058 1071 1085	9.77 10.32 10.90	— 1117 1130	— 11.53 12.14	— — 1173	— — 13.41	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
11894 12520 13772	1900 2000 2200	969 992 1040	7.92 8.47 9.67	1014 1035 1081	9.08 9.66 10.93	1058 1978 1120	10.27 10.89 12.23	1102 1120 1159	11.51 12.16 13.57	1145 1161 1198	12.78 13.46 14.94	1187 1202 1236	14.08 14.80 16.34	1228 1242 1273	15.42 16.17 17.77	— 1281 1310	— 17.57 19.23	— — 1347	— — 20.73	— — 1383	— — 22.25	— — 1419	— — 23.80	— — 1454	— — 25.38
15024 16276 17528	2400 2600 2800	1092 1146 1201	11.02 12.54 14.23	1130 1181 1235	12.36 13.96 15.73	1167 1216 1268	13.73 15.40 17.25	1203 1251 1301	15.14 16.88 18.80	1240 1285 1333	16.57 18.39 20.38	1275 1318 1365	18.04 19.92 21.99	1310 1352 1396	19.54 21.49 23.62	1345 1384 1427	21.07 23.08 25.29	1379 1417 1458	22.63 24.71 26.98	1414 1449 1489	24.21 26.36 28.70	1447 1481 1519	25.83 28.04 30.44	1481 1512 —	27.47 29.74 —
18780 20032 21284	3000 3200 3400	1258 1317 1376	16.10 18.17 20.44	1291 1348 1406	17.68 19.83 22.19	1322 1378 1435	19.28 21.52 23.96	1353 1407 1463	20.91 23.23 25.75	1384 1436 1491	22.57 24.96 27.57	1414 1465 1518	24.25 26.72 29.40	1444 1494 1546	25.96 28.50 31.26	1473 1522 —	27.69 30.31 —	1503 — —	29.46 — —	1531 — —	31.24 — —	— — —	— — —	— — —	— — —
22536 23788	3600 3800	1437 1498	22.94 25.66	1465 1525	24.77 27.58	1493 —	26.63 —	1520 —	28.50 —	1547 —	30.40 —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —	— —

Performance certified is for installation type B – free inlet, ducted outlet.

Power Rating (BHP) does not include transmission losses.

Performance ratings do not include the effectsof appurtenances (accessories).

Data in bold face indicates quietest and most efficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

RPM ³ TIP SPEED (FPM) = 9.566 x RPM OUTLET 7.66 Sq. Ft. Inside MAX. HP = 13.01

_{ ⁽1000 ⁾

391/4" x 281/2" Outside

B-365

WHEEL DIAMETER —361/2" INLET 8.11 Sq. Ft. Inside MAX. RPM{ 39" Dia. Outside CL.1 1098

CL.2 1431

VOL. CFM	OUTLET VEL. FPM	.25 S.P.		.38 S.P.		.50 S.P.		.63 S.P.		.75 S.P.		.88 S.P.		1 S.P.		1.25 S.P.		1.5 S.P.		1.75 S.P.		2 S.P.		2.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
6128 6894 7660	800 900 1000	311 337 364	0.41 0.51 0.62	338 362 387	0.55 0.66 0.78	363 384 408	0.69 0.81 0.95	387 407 428	0.83 0.97 1.12	411 428 448	0.99 1.13 1.30	— 450 468	— 1.30 1.48	— 470 487	— 1.48 1.67	— — 525	— — 2.06	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
8426 9192 9958	1100 1200 1300	392 420 448	0.76 0.92 1.10	413 439 467	0.93 1.10 1.30	433 458 484	1.11 1.29 1.50	452 476 501	1.29 1.49 1.71	470 494 518	1.48 1.69 1.92	489 511 534	1.67 1.89 2.13	507 528 550	1.87 2.10 2.36	542 560 581	2.28 2.54 2.81	576 592 611	2.72 2.99 3.29	— 624 641	— 3.46 3.78	— — 669	— — 4.29	— — —	— — —
10724 11490 12256	1400 1500 1600	477 506 536	1.30 1.53 1.79	495 523 551	1.52 1.76 2.04	511 539 567	1.73 1.99 2.28	527 554 581	1.95 2.23 2.53	543 569 595	2.18 2.46 2.78	558 583 609	2.41 2.70 3.03	573 598 623	2.64 2.95 3.29	603 626 649	3.12 3.45 3.82	631 653 675	3.61 3.97 4.36	659 679 701	4.13 4.51 4.92	687 705 725	4.66 5.06 5.49	740 756 774	5.76 6.20 6.68
13022 13788 14554	1700 1800 1900	565 595 625	2.09 2.41 2.77	580 609 639	2.34 2.68 3.06	595 623 652	2.60 2.96 3.34	609 637 665	2.86 3.23 3.63	622 650 677	3.13 3.51 3.93	636 662 690	3.40 3.79 4.22	649 675 702	3.67 4.07 4.52	674 699 725	4.22 4.65 5.12	699 723 748	4.78 5.24 5.73	723 746 770	5.36 5.84 6.36	747 769 792	5.96 6.46 7.00	793 813 835	7.19 7.73 8.32
15320 16852 18384	2000 2200 2400	655 715 776	3.17 4.08 5.16	668 727 787	3.47 4.41 5.52	681 739 798	3.77 4.74 5.88	693 751 809	4.07 5.07 6.24	705 762 819	4.38 5.41 6.60	717 773 830	4.69 5.74 6.97	729 784 840	5.00 6.08 7.33	751 805 860	5.63 6.76 8.07	773 825 879	6.27 7.45 8.82	795 845 898	6.92 8.16 9.57	816 865 916	7.58 8.87 10.34	857 903 952	8.95 10.33 11.89
19916 21448 22980	2600 2800 3000	837 898 960	6.42 7.88 9.56	847 908 969	6.81 8.30 10.01	858 918 978	7.20 8.72 10.46	868 927 987	7.59 9.14 10.91	878 936 996	7.98 9.57 11.36	887 946 1004	8.38 9.99 11.82	897 955 1013	8.77 10.41 12.27	915 972 1029	9.56 11.26 13.18	934 989 1046	10.37 12.12 14.09	951 1006 1062	11.17 12.98 15.01	969 1023 1077	11.99 13.85 15.93	1003 1055 1108	13.65 15.62 17.81
24512 26044 27576	3200 3400 3600	1021 1083 1144	11.47 13.63 16.05	1030 1091 1152	11.95 14.14 16.59	1038 1099 1160	12.43 14.65 17.13	1047 1107 1168	12.91 15.16 17.67	1055 1115 1175	13.39 15.67 18.21	1063 1123 1183	13.88 16.18 18.75	1072 1131 1190	14.36 16.69 19.29	1087 1146 1205	15.32 17.72 20.38	1103 1161 1219	16.30 18.75 21.46	1118 1175 1233	17.27 19.78 22.55	1133 1189 1246	18.25 20.82 23.65	1162 1217 1273	20.23 22.91 25.85
29108 30640 32172	3800 4000 4200	1206 1268 1330	18.74 21.73 25.02	1214 1275 1337	19.31 22.33 25.66	1221 1282 1344	19.88 22.93 26.29	1229 1289 1351	20.45 23.53 26.92	1236 1296 1357	21.02 24.13 27.55	1243 1303 1364	21.60 24.73 28.18	1250 1310 1370	22.17 25.33 28.81	1264 1323 1383	23.31 26.54 30.07	1277 1336 1395	24.46 27.74 31.34	1291 1349 1408	25.60 28.95 32.60	1304 1362 1420	26.76 30.16 33.87	1329 1386 —	29.07 32.59 —

VOL. CFM	OUTLET VEL. FPM	3 S.P.		3.5 S.P.		4 S.P.		4.5 S.P.		5 S.P.		5.5 S.P.		6 S.P.		6.5 S.P.		7 S.P.		7.5 S.P.		8 S.P.		8.5 S.P.
		RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
9958 10724 11490	1300 1400 1500	— — 806	— — 7.41	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
12256 13022 13788	1600 1700 1800	821 838 857	7.92 8.47 9.06	— 882 899	— 9.81 10.44	— — 941	— — 11.86	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
14554 15320 16852	1900 2000 2200	876 897 941	9.69 10.36 11.83	917 936 977	11.11 11.82 13.38	957 975 1013	12.57 13.33 14.97	996 1012 1048	14.08 14.88 16.60	— 1050 1083	— 16.47 18.28	— — 1117	— — 19.99	— — 1151	— — 21.74	— — 1185	— — 23.53	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —
18384 19916 21448	2400 2600 2800	987 1036 1086	13.49 15.35 17.41	1021 1068 1117	15.13 17.08 19.24	1055 1100 1147	16.81 18.85 21.11	1088 1131 1176	18.52 20.66 23.01	1121 1162 1205	20.28 22.50 24.94	1153 1192 1234	22.08 24.38 26.91	1185 1222 1262	23.91 26.29 28.91	1216 1252 1291	25.78 28.25 30.95	1247 1281 1318	27.69 30.23 33.01	1278 1310 1346	29.63 32.25 35.12	— 1339 1373	— 34.31 37.25	— 1367 1400	— 36.39 39.42
22980 24512 26044	3000 3200 3400	1138 1191 1245	19.71 22.24 25.02	1167 1218 1271	21.64 24.27 27.16	1196 1246 1297	23.60 26.33 29.32	1224 1273 1323	25.59 28.42 31.52	1251 1299 1348	27.62 30.55 33.74	1279 1325 1373	29.68 32.70 35.98	1305 1351 1398	31.77 34.88 38.26	1332 1376 1422	33.89 37.09 40.56	1359 1401 —	36.05 39.34 —	1385 1426 —	38.23 41.61 —	1411 — —	40.45 — —	— — —	— — —
27576 29108 30640	3600 3800 4000	1299 1355 1410	28.07 31.40 35.03	1325 1379 —	30.32 33.76 —	1350 1403 —	32.59 36.13 —	1374 1427 —	34.88 38.53 —	1398 — —	37.20 — —	1422 — —	39.55 — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —	— — —

Performance certified is for installation type B –free inlet, ducted outlet.

Power Rating (BHP) does not include transmission losses.

Performance ratings do not include the effects of appurtenances (accessories).

Data in bold face indicates quietest and mostefficient performance.

Class I Backward Inclined Blowers

Class II Backward Inclined Blowers

Non-Overloading Belt Drive — Arrangement #10 — SWSI — Class 1

SIZE	WHEELDIA.	SHAFT DIA.	A	B	C*	D	E	F	H STR	J AIGHT TH, DB,	K DISCHA BH, UB	L RGE	HBAAN	J U, TAU,GULAR D	K TAD, BISCHAR	L AD GE	M	N	P	Q	R	S	T	V	X	MAX. MOTOR FRAME
105	101/2	3/4	127/8	13	113/4	8	141/4	103/4	77/8	63/4	91/8	81/16	131/4	87/8	95/8	71/8	195/8	6	127/8	—	—	201/2	17	7/16	14	145T
122	121/4	1	163/8	131/2	131/4	95/8	131/2	143/4	101/8	81/2	111/2	101/2	165/8	103/4	121/2	91/8	237/8	63/8	131/4	111/4	123/4	251/4	20	1/2	17	182T
135	131/2	1	175/8	131/2	145/8	103/4	131/2	16	111/8	93/8	125/8	113/8	181/4	117/8	133/4	10	243/8	7	141/2	123/8	137/8	257/8	20	1/2	17	182T
150	15	1	191/4	151/2	161/4	113/4	151/2	175/8	123/8	103/8	141/8	123/8	201/8	131/4	151/4	111/8	267/8	71/2	161/8	133/8	147/8	275/8	22	1/2	177/8	182T
165	161/2	1	213/8	15	173/4	13	151/2	193/4	135/8	113/8	151/2	133/8	217/8	145/8	163/4	121/4	271/2	81/2	177/8	141/2	17	301/8	22	1/2	191/2	184T
182	181/4	13/16	231/8	17	195/8	141/4	171/2	211/2	15	125/8	171/8	145/8	241/8	16	181/2	135/8	305/8	91/8	195/8	153/4	181/4	333/8	25	1/2	217/8	184T
200	20	13/16	25	17	211/2	157/8	17	233/8	161/2	133/4	183/4	153/4	263/8	175/8	203/8	147/8	311/2	10	211/2	177/8	201/8	361/4	25	1/2	233/4	213T
222	221/4	13/16	273/8	161/2	24	173/8	17	253/4	181/4	151/4	207/8	171/4	29	191/2	225/8	161/2	323/4	105/8	237/8	193/8	225/8	393/4	26	1/2	261/8	213T
245	241/2	17/16	301/4	161/2	261/4	191/4	163/4	235/8	201/8	167/8	23	197/8	321/2	211/2	247/8	181/4	335/8	113/4	263/8	211/4	241/2	427/8	26	1/2	273/4	215T
270	27	17/16	33	161/2	29	211/4	161/2	261/4	221/8	181/2	251/4	211/2	353/8	235/8	273/8	20	345/8	125/8	29	233/4	261/2	47	26	1/2	301/2	215T
300	30	111/16	361/4	161/2	321/4	233/8	161/2	291/2	245/8	201/2	281/8	235/8	393/8	263/8	301/2	221/2	36	133/4	321/4	26	283/4	517/8	27	1/2	333/4	254T
330	33	111/16	391/2	213/8	353/8	257/8	215/8	331/8	271/8	221/2	307/8	255/8	43	287/8	331/2	243/8	413/8	15	353/8	283/8	311/8	581/2	303/8	7/8	383/8	254T
365	361/2	115/16	431/8	213/8	391/4	281/2	215/8	367/8	30	247/8	341/8	28	473/8	32	371/8	27	431/4	161/4	39	31	333/4	633/4	303/8	7/8	421/8	254T

NOTE: Letters “C” and “D” are outside housing dimensions. *“C” dimension on 105 extends 11/16" beyond center-line.

TEMPERATURE OPERATING LIMITS TEMPERATURE RPM DERATING FACTORS IN PERCENT:
STEEL WHEEL	ALUMINUM WHEEL
300°F 100% 301-400°F 96% 401-500°F 92% 501-600°F 85%	150°F 100% 151-200°F 95% 201-250°F 80%

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