Duall Division

Models & Specifications — Previous Page

NH Size 80½
Outlet Size 32" x 42" I.D • Inlet Size 42-1/4" I.D. • Tip speed = RPM x 10.54
Wheel Diameter 40-1/4" • Outlet Area 9.33 Sq. Ft. Inside • Max. BHP = 30.42(RPM/1000)³

S.P.		1.00		2.00		3.00		4.00		5.00		6.00		7.00		8.00		9.00		10.00		11.00		12.00		13.00		14.00
CFM	OV	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP	RPM	BHP
19000	2036	630	6.71	708	9.96	780	13.40	849	16.98	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*
19750	2117	648	7.26	724	10.64	795	14.17	862	17.87	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*
20500	2197	667	7.88	741	11.39	810	14.97	875	18.79	937	22.72	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*
21250	2278	685	8.50	758	12.12	825	15.80	887	19.67	950	23.79	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*
22000	2358	705	9.21	775	12.88	841	16.72	901	20.65	962	24.83	1019	29.13	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*
22750	2438	725	9.96	793	13.72	857	17.67	917	21.75	975	25.97	1031	30.32	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*
23500	2519	745	10.75	810	14.55	873	18.66	932	22.81	988	27.14	1044	31.62	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*	*
24250	2599	765	11.59	828	15.47	889	19.69	947	23.91	1001	28.33	1057	32.96	1109	37.66	*	*	*	*	*	*	*	*	*	*	*	*	*	*
25000	2680	785	12.46	846	16.42	905	20.75	963	25.12	1016	29.60	1069	34.24	1121	39.06	*	*	*	*	*	*	*	*	*	*	*	*	*	*
25750	2760	805	13.38	864	17.42	922	21.84	979	26.36	1031	30.90	1082	35.65	1134	40.60	1182	45.56	*	*	*	*	*	*	*	*	*	*	*	*
26500	2840	826	14.40	882	18.45	939	22.97	994	27.57	1047	32.33	1095	37.09	1147	42.18	1195	47.26	*	*	*	*	*	*	*	*	*	*	*	*
27250	2921	846	15.41	900	19.53	957	24.20	1010	28.90	1062	33.71	1110	38.60	1159	43.69	1208	49.01	1253	54.25	*	*	*	*	*	*	*	*	*	*
28000	001	866	16.48	919	20.72	974	25.41	1026	30.27	1078	35.23	1125	40.15	1172	45.35	1220	50.68	1266	56.17	*	*	*	*	*	*	*	*	*	*
28750	3081	887	17.65	937	21.88	992	26.73	1042	31.68	1093	36.69	1141	41.86	1186	47.12	1233	52.51	1278	57.99	1321	63.58	*	*	*	*	*	*	*	*
29500	3162	908	18.87	955	23.09	1010	28.10	1059	33.14	1109	38.29	1156	43.49	1201	48.89	1246	54.38	1291	60.00	1334	65.71	*	*	*	*	*	*	*	*
30250	3242	928	20.09	974	24.41	1027	29.43	1077	34.72	1125	39.95	1172	45.29	1216	50.71	1259	56.30	1304	62.04	1346	67.74	1388	73.78	*	*	*	*	*	*
31000	3323	949	21.43	994	25.83	1045	30.89	1094	36.24	1141	41.64	1187	47.02	1231	52.57	1273	58.26	1316	63.99	1359	69.95	1400	75.97	1439	82.00	*	*	*	*
31750	3403	970	22.82	1014	27.31	1063	32.41	1111	37.81	1157	43.39	1203	48.91	1247	54.60	1288	60.29	1329	66.12	1372	72.22	1413	78.37	1452	84.53	*	*	*	*
32500	3483	990	24.21	1034	28.85	1082	34.06	1129	39.53	1173	45.15	1219	50.85	1262	56.55	1303	62.38	1342	68.28	1385	74.53	14.25	80.65	1464	86.92	1502	93.35	*	*
33250	3564	1011	25.72	1054	30.45	1100	35.67	1147	41.31	1191	47.08	1235	52.84	1278	58.69	1318	64.51	1357	70.54	1397	76.73	1438	83.14	1477	89.54	1515	96.10	*	*
34000	3644	1032	27.30	1074	32.10	1118	37.34	1164	43.03	1208	48.95	1251	54.88	1293	60.74	1334	66.84	1373	73.01	1410	79.14	1451	85.68	1490	92.21	1527	98.70	1563	105.31
34750	3725	1053	28.94	1094	33.82	1136	39.06	1183	44.90	1225	50.86	1267	56.98	1309	62.98	1349	69.08	1388	75.38	1425	81.71	1464	88.27	1502	94.75	1540	101.55	1576	108.28
35500	3805	1074	30.65	1114	35.59	1155	40.94	1200	46.84	1243	52.96	1283	59.11	1325	65.28	1365	71.52	1403	77.80	1440	84.26	1476	90.72	1515	97.52	1552	104.26	1588	111.11
36250	3885	1095	32.43	1135	37.53	1173	42.76	1218	48.83	1260	54.98	1300	61.28	1341	67.63	1381	74.01	1419	80.44	1455	86.86	1490	93.42	1528	100.34	1565	107.21	1601	114.19
37000	3966	1116	34.27	1155	39.44	1192	44.75	1236	50.87	1278	57.18	1318	63.64	1357	70.04	1396	76.40	1434	82.96	1471	89.70	1506	96.40	1541	103.21	1578	110.21	1614	117.33

All capacities based on Standard Air (Density .075 #/cu. ft. — 70°F —29.92" Hg. Bar). Performance shown is for NH exhaust fans for installation type B-free inlet, ducted outlet.
Power rating (BHP) does not include drive losses. Performance ratings do not include the effects of appurtenances in the airstream.
Note: Uncolored area indicates Class II wheel; Purple area indicates Class III wheel; Green area indicates Class IV wheel. Asterisk (*) = Unstable Operating Range

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Duall
1550 Industrial Drive, Owosso, MI 48867
Phone: 989-725-8184 Fax: 989-725-8188
E-mail: info@dualldiv.com

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