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 9810
13 4B047 36"/.50 9810
14 4B049 36"/1.0 17495
15 4B051 48"/1.0 16050
16 3F520 48"/1.0 16350
17 3C610 48"/1.0 19125
18 7H214 36"/.50 8900
19 7H215 48"/1.0 17400
20 7H316 48"/1.0 17400
21 3F521 48"/1.0 17175
Note: Model is the Grainger Catalog Number
FUTURE PRODUCTS FANS [www.fp4fans.com ]
NO. MODEL DIA/HP CFM
1 12-GP 12"/.10 1170
2 12-2GP(high speed) 12"/.10 1170
3 12-2GP(low speed) 12"/.03 470
4 16-GP 16"/.25 2280
5 20-GP 20"/.25 2850
6 203-GP 20"/.33 3140
7 203-2GP(high speed) 20"/.33 3140
8 203-2GP (low speed) 20"/.11 1880
9 12-GR 12"/.10 1170
10 12-2GR (high speed) 12"/.10 1170
11 12-2GR (low speed) 12"/.03 470
12 20-GR 20"/.25 3050
13 203-GR 20"/.33 3640
14 203-2GR (high speed) 20"/.33 3640
15 203-2GR (low speed) 20"/.11 2120
16 SBF-A24 24"/.5 5962
17 SBF-A24C 24"/.5 6435
18 SBF-A30 30"/.5 8211
19 SBF-A30C 30"/.5 8989
20 SBF-A36 36"/.5 9508
21 SBF-A36C 36"/.5 10417
22 SBF-A42 42"/1.0 16077
23 SBF-A42C 42"/1.0 16489
24 SBF-A48 48"/1.0 17175
25 SBF-A48C 48"/1.0 18608
26 SBF-A54 54"/1.0 19820
27 SBF-A54C 54"/1.0 20330
HIRED HAND FANS (2003 CATALOG)
NO. PART # DESCRIPTION CFM
1 6603-6020 48" PVC SHUTTER/CONE/GUARD 24527
2 6603-6020 48" AL.SHUTTER/CONE/GUARD 25914
3 6603-6020 48" ROLLSEAL SHUTTER/CONE/GUARD 26812
4 6603-6010 48" PVC/SHUTTER/GUARD 20200
5 6603-6010 48" AL. SHUTTER/GUARD 20833
6 6603-6010 48" ROLLSEAL SHUTTER/GUARD 21336
7 6603-6012 48" PVC SHUTTER/CONE/GUARD 23100
8 6603-6012 48" AL. SHUTTER/CONE/GUARD 23600
9 6603-6012 48" ROLLSEAL SHUTTER/CONE/GUARD 24200
10 6603-6088 36" PVC SHUTTER/GUARD 8337
11 6603-6085 36" AL. SHUTTER/GUARD 7875
12 6603-6085 36" ROLLSEAL SHUTTER/GUARD 9233
13 6603-6086 36" PVC SHUTTER/CONE/GUARD 10270
14 6603-6087 36" AL. SHUTTER/CONE/GUARD 9848
15 6603-6087 36" ROLLSEAL SHUTTER/CONE/GUARD 10856
16 6603-0118 36" BELT 8092
17 6603-5510 48" BELT 18967
18 6603-0248 24" DIRECT 3785
19 6603-0102 36" DIRECT 9096
20 6603-0174 48" DIRECT 15303
21 6603-5560 48" DIRECT/AL.SHUTTER/CONE/GUARD 16164
Note: These fans were measured in factory provided housing. Visit www.Hired-Hand.com for questions.
HIRED-HANDS FANS (1998 CATALOG)
NO. MODEL DIA/HP CFM
1 EF-36 36"/.50 8550
2 EF-48 48"/1.0 17280
3 EF-36D 36"/.50 9715
4 EF-36SW 36"/.50 10060
5 EF-48SW 48"/1.0 19090
6 FF-10 10"/.17 1085
7 FF-14 14"/.25 1840
8 FF-18 18"/.33 3350
9 FF-24 24"/.33 4900
10 FF-4815 48"/1.5 19000
11 FF-4810 48"/1.0 17300
12 FF-3650 36"/.50 9100
13 FF-3650-DD 36"/.50 9000
14 FF-4815-C 48"/1.5 20600
15 FF-4810-C 48"/1.0 19200
16 FF-3650-C 36"/.50 9800
17 FF-3650-DD-C 36"/.50 9800
J & D MANUFACTURING CO. FANS [www.jdmfg.com]
NOTE: These manufacturer CFM measurements were made at .05 inch static pressure and are slightly larger than would have been obtained if measured at 0.1 inch static pressure. This will lead to a slightly larger area of screening fabric than required to maintain greenhouse static pressure of 0.1 inch. However, this slight overcalculation assures that the pressure drop is well within the limits required for efficient operation.
NO. MODEL DIA/HP CFM
1 VF48CS(VFS48CS) 48"/1.0 21000
2 VF48CS3(VFS48CS3) 48"/1.0 21000
3 VF48CS2(VFS48CS2)(High speed) 48"/1.0 20100
4 VF48CS2(VFS48CS2)(Low speed) 48"/1.0 11800
QUIETAIRE ALUMINUM FANS[www.quietaire.com ]
NO. MODEL DIA/HP CFM(Square Wall) CFM(Angle Flow)
1 GHA2633 26"/.33 5450 5850
2 GHA2650 26"/.5 6520 6860
3 GHA2675 26"/.75 7680 7900
4 GHA26100 26"/1.0 8590 8800
5 GHA3233 32"/.33 6900 7850
6 GHA3250 32"/.50 8400 9150
7 GHA3275 32"/.75 10000 10600
8 GHA32100 32"/1.0 11280 11750
9 GHA3833 38"/.33 8750 9950
10 GHA3850 38"/.5 10850 11700
11 GHA3875 38"/.75 12980 13710
12 GHA38100 38"/1.0 14500 15370
13 GHA4450 44"/.5 12300 13600
14 GHA4475 44"/.75 14950 16000
15 GHA44100 44"/1.0 17100 17800
16 GHA5050 50"/.5 13850 17200
17 GHA5075 50"/.75 17500 19300
18 GHA50100 50"/1.0 20150 21500
19 GHA50150 50"/1.5 24000 24500
20 GHA50200 50"/2.0 26319 27277
21 GHA56100 56"/1.0 21400 24300
22 GHA56150 56"/1.5 26500 28500
23 GHA56200 56"/2.0 30300 32900
QUIETAIRE GALVANIZED FANS
NO. CAT # DIA/HP CFM (Square Wall) CFM Angle Flow)
1 GCS2433 22"/.33 5021 5350
2 GCS2450 24"/.50 6006 6290
3 GCS2475 26"/.75 6970 7220
4 GCS3033 30"/.33 5569 6274
5 GCS3250 32"/.50 6956 7412
6 GCS3075 30"/.75 8131 8534
7 GCS3633 36"/.33 7583 8677
8 GCS3650 36"/.50 9553 10308
9 GCS3675 36"/.75 11253 11911
10 GCS36100 36"/1.0 12907 13494
11 GCS4233 42"/.33 8755 10426
12 GCS4250 42"/.50 11290 12384
13 GCS4275 42"/.75 13460 14307
14 GCS42100 42"/1.0 15490 16245
15 GCS42150 42"/1.5 17901 18571
16 GCS42200 42"/2.0 20557 21150
17 GCS4850 48"/.50 14166 15698
18 GCS4875 48"/.75 16989 18180
19 GCS48100 48"/1.0 19563 20628
20 GCS48150 48"/1.5 22527 23473
21 GCS48200 48"/2.0 25355 26222
22 GCS56100 56"/1.0 21400 24300
23 GCS56150 56"/1.5 26500 28500
24 GCS56200 56"/2.0 30300 32900
SCHAEFER FANS [www.schaeferfan.com ]
NOTE: These manufacturer CFM measurements were made at .05 inch static pressure and are slightly larger than would have been obtained if measured at 0.1 inch static pressure. This will lead to a slightly larger area of screening fabric than required to maintain greenhouse static pressure of 0.1 inch. However, this slight overcalculation assures that the pressure drop is well within the limits required for efficient operation.
NO. MODEL DIA/HP CFM
1 SE3600 36"/.50 10230
2 SE4800 48"/1.0 16700
3 SE4802 48"/1.0 16400
4 FM3690-1S 36"/.50 9780
5 FM3690-1G 36"/.50 9610
6 FM3600-1G 36"/.50 9600
7 FM3600-2G (high speed) 36"/.50 9434
8 FM3600-2G (low speed) 36"/.50 5464
9 FM4200-1G 42"/.75 14812
10 FM4200-2G (high speed) 42"/.75 14785
11 FM4200-2G (low speed) 42"/.75 8391
12 FM4800-1G 48"/1.0 18614
13 FM4800-2G (high speed) 48"/1.0 16900
14 FM4800-2G (low speed) 48"/1.0 9716
15 FM4800-1S 48"/1.0 18614
16 FM4800-2S (high speed) 48"/1.0 16900
17 FM4800-2S (low speed) 48"/1.0 9716