This listing of greenhouse fan airflow rates was obtained from manufacturers' catalogs and is displayed here for user convenience. The listing is composed principally of data from 2003 catalogs. It also contains data on fans from earlier catalogs and resources. 2003 fan specs supercede any older fan specifications found elsewhere.
Listed airflows were measured in cubic feet/minute (CFM) at 0.1 inch static pressure. Airflows for some fans were measured with no appurtenances in the airstream. Appurtenances are factors that reduce air flow such as shutters, guards, etc. Fans sold packaged with appurtenances have CFM measurements already adjusted. Failure to account for added appurtenances will increase estimated CFM slightly, yielding a slightly larger and completely safe screen design. However, slant, angle and tilt designs increase airflow rather than reduce it. Failure to account for slant, angle or tilt mounting will underestimate CFM and result in a screening area less than recommended for efficient operation. If you have a slant angle installation and are unsure if the CFM listing accounts for the slant, contact the manufacturer.
ACME MASTER-EX FANS (SLANT WALL) [www.acmehort.com/]
NO. MODEL DIA/HP CFM
1 DDP8B2 8"/.125 890
2 DDP12B4 12"/.1 1310
3 DDP14B4(-C) 14"/.1 1715
4 DDP14D4(-C) 14"/.2 2215
5 DDP18B4(-C) 18"/.1 2430
6 DDP18F4(-C) 18"/.33 4220
7 DDP24G6(-C) 24"/.5 6770
8 DDP30G6 30"/.5 8220
9 DDP36G8 36"/.5 9990
10 DDPS14B4-C 14"/.1 1500
11 DDPS14D4-C 14"/.2 1840
12 DDPS18B4-C 18"/.1 2060
13 DDPS18F4-C 18"/.33 3810
14 DDPS24G6-C 24"/.5 6500
15 DDPS30G6-C 30"/.5 8220
16 DDPS36G8-C 36"/.5 9460
17 DDPS361G8-C 36"/.5 9990
18 DDPS36G-C 36"/.5 11860
19 DDPS48J1-C 48"/1.0 20300
20 DDPS48J-C 48"/1.0 19100
21 DDPS48J8-C 48"/1.0 18200
22 DDPS48K-C 48"/1.5 22300
23 DDPS50J1-C 50"/1.0 23400
24 DDPS50J-C 50"/1.0 22600
25 DDPS50J3-C 50"/1.0 22700
26 DDPS50J3L-C 50"/1.0 18400
27 DDPS50JL-C 50"/1.0 17800
28 DDPS50K-C 50"/1.5 24700
ACME WINDMASTER ALUMINUM FANS
Note: For 2-speed fans operated at low speed multiply CFM by one-half. (0.5)
NO. MODEL DIA/HP CFM (Square wall) CFM (Slant wall)
1 DCA24E 24"/.25 4185 4580
2 CDA24F 24"/.33 5235 5555
3 DCA24G 24"/.5 6065 6290
4 DCA24G-2S 24"/.5 5575 5820
5 DCA24H 24"/.75 6985 7195
6 DCA24H-2S 24"/.75 6365 6600
7 DCA30F 30"/.33 7225 7750
8 DCA30G 30"/.5 8580 8990
9 DCA30G-2S 30"/.5 7515 8005
10 DCA30H 30".75 9940 10285
11 DCA30H-2S 30"/.75 9290 9660
12 DCA36F 36"/.33 8555 9345
13 DCA36G 36"/.5 10475 11065
14 DCA36G-2S 36"/.5 9310 10055
15 DCA36H 36"/.75 12225 12785
16 DCA36H-2S 36"/.75 10585 11235
17 DCA36J 36"/1.0 13775 14175
18 DCA42G 42"/.5 12465 13635
19 DCA42G-2S 42"/.5 11105 12435
20 DCA42H 42"/.75 15190 15940
21 DCA42H-2S 42"/.75 13950 14800
22 DCA42J 42"/1.0 16980 17620
23 DCA48G 48"/.5 14495 16215
24 DCA48G-2S 48"/.5 12045 14215
25 DCA48H 48"/.75 17625 18825
26 DCA48H-2S 48"/.75 14805 16445
27 DCA48J 48"/1.0 19420 20440
28 DCA54-4J 54"/1.0 21920 23870
29 DCA54-4K 54"/1.5 26000 27610
ACME WINDMASTER STEEL FANS
Note: For 2-speed fans operated at low speed, multiply CFM by one-half (0.5)
NO. MODEL DIA/HP CFM (Square wall) CFM (Slant wall)
1 DC24E 24"/.25 4530 4950
2 DC24F 24"/.33 5655 5960
3 DC24G 24"/.5 6450 6715
4 DC24G-2S 24"/.5 5920 6210
5 DC24H 24"/.75 7625 7840
6 DC24H-2S 24"/.75 6955 7195
7 DC30F 30"/.33 7400 7985
8 DC30G 30"/.5 8840 9305
9 DC30G-2S 30"/.5 7720 8275
10 DC30H 30"/.75 10230 10620
11 DC30H-2S 30"/.75 9550 9970
12 DC36F 36"/.33 8790 9570
13 DC36G 36"/.5 10550 11190
14 DC36G-2S 36"/.5 9680 10390
15 DC36H 36"/.75 12650 13175
16 DC36H-2S 36"/.75 10985 11595
17 DC36J 36"/1.0 14150 14630
18 DC42G 42"/.5 12490 13550
19 DC42G-2S 42"/.5 11125 12385
20 DC42H 42"/.75 14970 15815
21 DC42H-2S 42"/.75 13725 14670
22 DC42J 42"/1.0 16760 17500
23 DC48G 48"/.5 14650 16220
24 DC48G-2S 48"/.5 12230 14230
25 DC48H 48"/.75 17795 19005
26 DC48H-2S 48"/.75 15080 16585
27 DC48J 48"/1.0 19600 20675
28 DC48K 48"/1.5 23450 24335
29 DC54J 54"/1.0 22810 24030
30 DC54-4J 54"/1.0 22660 24560
31 DC54K 54"/1.5 25770 26795
32 DC54K-4K 54"/1.5 26295 27690
ACME SKYMASTER FANS
NO. MODEL DIA/HP CFM
1 EC30E 30"/.25 4800
2 EC30F 30"/.33 6170
3 EC36F 36"/.33 7440
4 EC36G 36"/.50 9010
5 EC42G 42"/.50 10740
6 EC42H 42"/.75 12930
7 EC42J 42"/1.0 14530
ACME FCM COMPOSITE MASTER FANS
NO. MODEL DIA/HP CFM
1 FCM18F4 18"/.33 3520
2 FCM24G6 24"/.50 6340
ACME DYNAMASTER FANS
NO. MODEL DIA/HP CFM
1 FQ129 12"/.11 1280
2 FQ16C6 16"/.12 2020
3 FN18E4 18"/.25 3165
ACME ECONOMY DIRECT DRIVE FANS
NO. MODEL DIA/HP CFM
1 AGD24G6-B 24"/.5 4720
2 AGD30G6-B 30"/.5 6375
3 AGD36J8-B 36"/.5 8895
4 AGD42J8-B 42"/1.0 13045
5 AGD48J8-B 48"/1.0 16615
AEROTECH APEX FANS [aerotech-inc.com]
NO. CATALOG# DIA/HP CFM
1 AX36G 36"/.50 9600
2 AX36D1G 36"/1.0 12880
3 AX365G 36"/.50 10500
4 AX361G 36"/1.0 14500
5 AX481G 48"/1.0 20200
6 AX4815G 48"/1.5 22500
7 AX482G 48"/2.0 24490
8 AX511G 51"/1.0 22600
9 AX5115G 51"/1.5 24870
10 AX36TXCP 36"/.50 10300
11 AX365TXCP 36"/.50 11100
12 AX481TXCP 48"/1.0 21400
13 AX4815TXCP 48"/1.5 23700
14 AX511TXCP 51"/1.0 23290
15 AX5115TXCP 51"/1.5 25570
16 AX36TXP 36"/.50 9000
17 AX365TXP 36"/.50 9700
18 AX481TXP 48"/1.0 18500
19 AX4815TXP 48"/1.5 20500
20 AX36TXA 36"/.50 9300
21 AX365TXA 36"/.50 10000
22 AX481TXA 48"/1.0 19100
23 AX4815TXA 48"/1.5 21200
AEROTECH ADVANTAGE FANS
NO. CATALOG # DIA/HP CFM
1 AT18ZC 18"/.33 4240
2 AT24ZC 24"/.33 5750
3 AT36ZC 36"/.50 10920
4 AT365ZC 36"/.50 10880
5 AT487ZC 48"/.75 18700
6 AT481ZC 48"/1.0 22000
7 AT4815ZC 48"/1.5 24800
8 AT6015ZC 60"/1.5 29970
9 AT602ZC 60"/2.0 33930
10 AT36ZG 36"/.50 9250
11 AT365ZG 36"/.50 9950
12 AT487ZG 48"/.75 16500
13 AT481ZG 48"/1.0 19400
14 AT4815ZG 48"/1.5 21500
AEROTECH CLASSIC FANS
NO. CATALOG# DIA/HP CFM
1 AT36G(al.prop) 36"/.50 9610
2 AT36G(steel prop) 36"/.50 9130
3 AT365G(al.prop) 36"/.50 10500
4 AT365G(steel prop) 36"/.50 9975
5 AT427G(al.prop) 42"/.75 15300
6 AT427G(steel prop) 42"/.75 14688
7 AT481G(al.prop) 48"/1.0 20200
8 AT481G(steel prop) 48"/1.0 19594
9 AT4815G(al.prop) 48"/1.5 22480
10 AT4815G(steel prop) 48"/1.5 21806
AEROTECH GROWER FANS
NO. CATALOG # DIA/HP CFM
1 GB18G 18"/.33 3840
2 GB24G 24"/.33 5390
3 GB36G 36"/.50 9800
4 GB365G 36"/.50 10300
5 GB48G 48"/1.0 17300
6 GB481G 48"/1.0 20900
7 GB4815G 48"/1.5 21700
8 GB36TXCP 36"/.50 10300
9 GB365TXCP 36"/.50 10900
10 GB48TXCP 48"/1.0 19700
11 GB481TXCP 48"/1.0 21900
12 GB4815TXCP 48"/1.5 24000
13 GB36TXP 36"/.50 9120
14 GB365TXP 36"/.50 9600
15 GB48TXP 48"/1.0 17300
16 GB481TXP 48"/1.0 19600
17 GB4815TXP 48"/1.5 20900
AEROTECH VORTEX FANS
NO. CATALOG # DIA/HP CFM
1 VX26FCR 26"/.33 6990
2 VX517FCR 51"/.75 20300
3 VX511FCR 51"/1.0 24900
4 VX5115FCR 51"/1.5 28200
COOLAIR ALUMINUM FANS [For specific fan information contact www.Coolair.com ]
NO. MODEL DIA/HP CFM
1 AL24G 24"/.25 4880
2 AL24H 24"/.33 5500
3 AL24J 24"/.50 6500
4 AL24K 24"/.75 7700
5 AL30G 30"/.25 6250
6 AL30H 30"/.33 7400
7 AL30J 30"/.50 8650
8 AL30K 30"/.75 10150
9 AL36H 36"/.33 8450
10 AL36J 36"/.50 10300
11 AL36K 36"/.75 12550
12 AL36L 36"/1.0 14350
13 AL42H 42"/.33 9900
14 AL42J 42"/.50 11950
15 AL42K 42"/.75 14650
16 AL42L 42"/1.0 17250
17 AL48J 48"/.50 13750
18 AL48K 48"/.75 17050
19 AL48L 48"/1.0 20150
20 AL54L 54"/1.0 21750
21 AL54M 54"/1.5 25850
COOLAIR NBF FANS
NO. MODEL DIA/HP CFM
1 NBF24G 24"/.25 4755
2 NBF24H 24"/.33 5490
3 NBF24J 24"/.50 6550
4 NBF24K 24"/.75 7970
5 NBF30G 30"/.25 6480
6 NBF30H 30"/.33 7360
7 NBF30J 30"/.50 9020
8 NBF30K 30"/.75 10350
9 NBF36H 36"/.33 8890
10 NBF36J 36"/.50 10580
11 NBF36K 36"/.75 12495
12 NBF36L 36"/1.0 14360
13 NBF42J 42"/.50 11925
14 NBF42K 42"/.75 14930
15 NBF42L 42"/1.0 16685
16 NBF48J 48"/.50 14300
17 NBF48K 48"/.75 17650
18 NBF48L 48"/1.0 19220
19 NBFH48L 48"/1.0 20800
20 NBF54L [NBFA54L] 54"/1.0 21360
21 NBF54M[NBFA54M]54"/1.5 26475
DAYTON FANS
NO. MODEL DIA/HP CFM
1 3F517 36"/.33 7830
2 3C675 36"/.50 9810
3 5C962 36"/.50 9810
4 6B001 36"/.50 9810
5 3C990 42"/.75 13670
6 3F519 48"/1.0 17495
7 6E840 48"/1.0 17495
8 3F518 36"/.33 8180
9 3C613 36"/.50 9535
10 3C615 36"/.50 9825
11 4B052 36"/.50 8205
12 4B046 36"/.50 &nbs