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Centrifugal Downblast Exhaust Fan, Product # GB-140-LMD122XQD, 751-3209 CFM

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Centrifugal Downblast Exhaust Fan, Product # GB-140-LMD122XQD, 751-3209 CFM

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CFM Range

751-3209
CFM

Mounting Location

Roof

Drive Package

No drive package included

22 x 22 inch base with prepunched mounting holes for easy attachment to roof curb
Multiple motor and drive options available to meet any performance and application need
18.5 x 18.5 inch recommended roof opening

Shipping Type:

Freight

View other GB-140 products

$892.06

25 Days
Lead Time

Free shipping

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Submit a request online and get a quote from your local representative within 4 hours.

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CFM Range

751-3209
CFM

Mounting Location

Roof

Drive Package

No drive package included

22 x 22 inch base with prepunched mounting holes for easy attachment to roof curb
Multiple motor and drive options available to meet any performance and application need
18.5 x 18.5 inch recommended roof opening

Shipping Type:

Freight

View other GB-140 products

Model GB, belt drive centrifugal roof exhaust fans are designed to meet the general clean air exhaust requirements for industrial and commercial buildings. Units feature a fully rolled windband bead for increased stability and easy transport. Fresh outside air is drawn in under the motor cover to maximize motor life. Ideal for new installations or for retrofit, replacement applications. Curb adapters and reducers available to eliminate the need to field fabricate transitions when there is an existing roof curb.

Centrifugal wheel provides high-efficiency and minimal sound
True vibration isolation supports the motor and wheel for long life and quiet operation
One-piece aluminum curb cap provides a weather-tight fit
Galvanized birdscreen protects the fan discharge from birds and small objects
Fully rolled windband bead for increased stability and easy transport
Positive motor cooling with fresh air results in maximum motor life
Permanent embossed aluminum nameplate for exact model and serial number identification

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Loren Cook ACEB-150
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Twin City Fan BCRD-140DHP
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Captive Aire DD-FA-8
Captive Aire DD-FA-9
Captive Aire DD-FA-11
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Captive Aire DD-HPFA-7
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California Residents-

Prop 65 Warning

Specifications

Dimensions
Application
Construction Features
Motor Information
General

Base/Panel Length X Width

22 x 22 in

Curb Cap Size

22 in

Impeller Diameter

14 3/4 in

Roof Opening Width x Roof Opening Length

18 1/2 x 18 1/2 in

Base Height

1 3/4 in

Base Top to Shroud Top

23 3/4 in

Damper Width x Damper Height

16 x 16 in

Bearing Size

3/4 in

Height

23 3/4 in

Weight

54 lbs

Overall Diameter

28 3/8 in

Application

Exhaust General and Clean Air

Housing Material

Spun Aluminum

Drive Type

Belt Drive

Impeller Type

Centrifugal Wheel

Impeller Material

Aluminum

Certifications

AMCA Sound & Air
High Wind and Hurricane
Seismic
UL/cUL 705

Drive Package Description

No drive package included

Required Accessory

Roof curb for new installations

Motor Included

Shipping Type

Freight

Warranty Length

1 Year

Performance

CFM Range

751-3209

FRPM Range

520-1730

What do these terms (BHP, CFM, Sones, etc.) mean?

Motor HP	Max BHP	Max Fan RPM	Min Fan RPM	Ps (in. wg)	0	0.125	0.25	0.375	0.5	0.625	0.75	0.875	1	1.25	1.5	1.75
1/4	0.04	570	520	CFM	1057	830	-	-	-	-	-	-	-	-	-	-
				Sones	4.8	4.8	-	-	-	-	-	-	-	-	-	-
				Bhp	0.035	0.039	-	-	-	-	-	-	-	-	-	-
1/4	0.07	710	570	CFM	1317	1148	909	-	-	-	-	-	-	-	-	-
				Sones	5.9	5.9	5.2	-	-	-	-	-	-	-	-	-
				Bhp	0.069	0.074	0.074	-	-	-	-	-	-	-	-	-
1/4	0.14	880	710	CFM	1632	1497	1349	1143	-	-	-	-	-	-	-	-
				Sones	7.4	7.4	7	6.5	-	-	-	-	-	-	-	-
				Bhp	0.13	0.14	0.14	0.14	-	-	-	-	-	-	-	-
1/4	0.28	1100	880	CFM	2041	1931	1823	1703	1560	1366	999	-	-	-	-	-
				Sones	10.6	10.4	9.9	9.4	9	8.4	7.7	-	-	-	-	-
				Bhp	0.25	0.27	0.27	0.28	0.28	0.27	0.24	-	-	-	-	-
1/3	0.05	630	540	CFM	1169	972	-	-	-	-	-	-	-	-	-	-
				Sones	5.2	5.3	-	-	-	-	-	-	-	-	-	-
				Bhp	0.048	0.052	-	-	-	-	-	-	-	-	-	-
1/3	0.1	780	630	CFM	1447	1293	1109	751	-	-	-	-	-	-	-	-
				Sones	6.5	6.5	6	6.1	-	-	-	-	-	-	-	-
				Bhp	0.091	0.098	0.1	0.09	-	-	-	-	-	-	-	-
1/3	0.19	970	780	CFM	1799	1676	1550	1395	1167	-	-	-	-	-	-	-
				Sones	8.5	8.4	8	7.5	7	-	-	-	-	-	-	-
				Bhp	0.17	0.18	0.19	0.19	0.19	-	-	-	-	-	-	-
1/3	0.37	1210	970	CFM	2245	2144	2048	1946	1830	1689	1515	1242	-	-	-	-
				Sones	12.3	12.1	11.6	11.1	1.6	10.2	9.7	9	-	-	-	-
				Bhp	0.34	0.35	0.36	0.37	0.37	0.37	0.36	0.34	-	-	-	-
1/2	0.04	580	530	CFM	1076	855	-	-	-	-	-	-	-	-	-	-
				Sones	4.9	4.9	-	-	-	-	-	-	-	-	-	-
				Bhp	0.037	0.041	-	-	-	-	-	-	-	-	-	-
1/2	0.08	720	580	CFM	1336	1169	938	-	-	-	-	-	-	-	-	-
				Sones	5.9	6	5.3	-	-	-	-	-	-	-	-	-
				Bhp	0.071	0.078	0.077	-	-	-	-	-	-	-	-	-
1/2	0.15	890	720	CFM	1651	1517	1372	1173	-	-	-	-	-	-	-	-
				Sones	7.5	7.5	7.1	6.6	-	-	-	-	-	-	-	-
				Bhp	0.14	0.14	0.15	0.15	-	-	-	-	-	-	-	-
1/2	0.29	1110	890	CFM	2059	1950	1844	1725	1585	1399	1107	-	-	-	-	-
				Sones	10.8	10.6	10.1	9.6	9.1	8.6	8	-	-	-	-	-
				Bhp	0.26	0.27	0.28	0.29	0.29	0.28	0.26	-	-	-	-	-
1/2	0.56	1380	1110	CFM	2560	2472	2386	2300	2210	2108	1993	1850	1683	-	-	-
				Sones	15.4	15	14.6	14.1	13.6	13.2	12.7	12.2	11.7	-	-	-
				Bhp	0.5	0.52	0.53	0.54	0.55	0.55	0.56	0.55	0.54	-	-	-
3/4	0.43	1270	1060	CFM	2356	2260	2168	2072	1966	1845	1691	1490	1150	-	-	-
				Sones	13.3	13	12.6	12.1	11.6	11.1	10.6	10.1	9.3	-	-	-
				Bhp	0.39	0.4	0.42	0.43	0.43	0.43	0.43	0.41	0.37	-	-	-
3/4	0.83	1580	1270	CFM	2931	2854	2778	2704	2628	2550	2463	2372	2268	2009	1609	-
				Sones	18.3	18.6	17.7	17.5	17.3	16.6	15.7	15.3	15.2	15.1	15.1	-
				Bhp	0.76	0.77	0.79	0.8	0.81	0.82	0.82	0.82	0.83	0.81	0.76	-
1	0.57	1390	1180	CFM	2579	2491	2406	2321	2232	2131	2018	1879	1723	-	-	-
				Sones	15.6	15.2	14.8	14.4	13.8	13.4	12.9	12.4	12	-	-	-
				Bhp	0.51	0.53	0.54	0.55	0.56	0.56	0.57	0.56	0.55	-	-	-
1	1.1	1730	1390	CFM	3209	3139	3069	3001	2934	2863	2792	2713	2631	2441	2199	1836
				Sones	21	21	20	20	19.7	19.3	18.5	17.7	17.3	17	16.9	16.7
				Bhp	0.99	1.01	1.03	1.04	1.06	1.07	1.08	1.08	1.08	1.1	1.07	1.01

Motor HP	1/4			1/4			1/4			1/4			1/3			1/3			1/3			1/3			1/2			1/2			1/2			1/2			1/2			3/4			3/4			1			1
Max BHP	0.04			0.07			0.14			0.28			0.05			0.1			0.19			0.37			0.04			0.08			0.15			0.29			0.56			0.43			0.83			0.57			1.1
Max Fan RPM	570			710			880			1100			630			780			970			1210			580			720			890			1110			1380			1270			1580			1390			1730
Min Fan RPM	520			570			710			880			540			630			780			970			530			580			720			890			1110			1060			1270			1180			1390
Ps (in. wg)	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp	CFM	Sones	Bhp
0	1057	4.8	0.035	1317	5.9	0.069	1632	7.4	0.13	2041	10.6	0.25	1169	5.2	0.048	1447	6.5	0.091	1799	8.5	0.17	2245	12.3	0.34	1076	4.9	0.037	1336	5.9	0.071	1651	7.5	0.14	2059	10.8	0.26	2560	15.4	0.5	2356	13.3	0.39	2931	18.3	0.76	2579	15.6	0.51	3209	21	0.99
0.125	830	4.8	0.039	1148	5.9	0.074	1497	7.4	0.14	1931	10.4	0.27	972	5.3	0.052	1293	6.5	0.098	1676	8.4	0.18	2144	12.1	0.35	855	4.9	0.041	1169	6	0.078	1517	7.5	0.14	1950	10.6	0.27	2472	15	0.52	2260	13	0.4	2854	18.6	0.77	2491	15.2	0.53	3139	21	1.01
0.25	-	-	-	909	5.2	0.074	1349	7	0.14	1823	9.9	0.27	-	-	-	1109	6	0.1	1550	8	0.19	2048	11.6	0.36	-	-	-	938	5.3	0.077	1372	7.1	0.15	1844	10.1	0.28	2386	14.6	0.53	2168	12.6	0.42	2778	17.7	0.79	2406	14.8	0.54	3069	20	1.03
0.375	-	-	-	-	-	-	1143	6.5	0.14	1703	9.4	0.28	-	-	-	751	6.1	0.09	1395	7.5	0.19	1946	11.1	0.37	-	-	-	-	-	-	1173	6.6	0.15	1725	9.6	0.29	2300	14.1	0.54	2072	12.1	0.43	2704	17.5	0.8	2321	14.4	0.55	3001	20	1.04
0.5	-	-	-	-	-	-	-	-	-	1560	9	0.28	-	-	-	-	-	-	1167	7	0.19	1830	1.6	0.37	-	-	-	-	-	-	-	-	-	1585	9.1	0.29	2210	13.6	0.55	1966	11.6	0.43	2628	17.3	0.81	2232	13.8	0.56	2934	19.7	1.06
0.625	-	-	-	-	-	-	-	-	-	1366	8.4	0.27	-	-	-	-	-	-	-	-	-	1689	10.2	0.37	-	-	-	-	-	-	-	-	-	1399	8.6	0.28	2108	13.2	0.55	1845	11.1	0.43	2550	16.6	0.82	2131	13.4	0.56	2863	19.3	1.07
0.75	-	-	-	-	-	-	-	-	-	999	7.7	0.24	-	-	-	-	-	-	-	-	-	1515	9.7	0.36	-	-	-	-	-	-	-	-	-	1107	8	0.26	1993	12.7	0.56	1691	10.6	0.43	2463	15.7	0.82	2018	12.9	0.57	2792	18.5	1.08
0.875	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1242	9	0.34	-	-	-	-	-	-	-	-	-	-	-	-	1850	12.2	0.55	1490	10.1	0.41	2372	15.3	0.82	1879	12.4	0.56	2713	17.7	1.08
1	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1683	11.7	0.54	1150	9.3	0.37	2268	15.2	0.83	1723	12	0.55	2631	17.3	1.08
1.25	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	2009	15.1	0.81	-	-	-	2441	17	1.1
1.5	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1609	15.1	0.76	-	-	-	2199	16.9	1.07
1.75	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	1836	16.7	1.01

Greenheck Fan Corporation certifies that the model shown herein is licensed to bear the AMCA Seal. The ratings shown are based on tests and procedures performed in accordance with AMCA Publication 211 and AMCA Publication 311 and comply with the requirements of the AMCA Certified Ratings Program.
Performance certified is for installation type A: Free inlet, Free outlet.
Power rating (BHP/kW) includes transmission losses.
Performance ratings include the effects of birdscreen.
The sound ratings shown are loudness values in fan sones at 5 ft. (1.5 m) in a hemispherical free field calculated per AMCA Standard 301. Values shown are for installation type A: free inlet hemispherical sone levels.

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