Voltage Voltage |
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Airflow @ Static Pressure Airflow @ Static Pressure |
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Motor Speed Motor Speed |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement)  |
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Volume Volume |
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Motor Enclosure Type Motor Enclosure Type |
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Overall Height Overall Height |
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Overall Diameter Overall Diameter |
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RoHS (Restriction of Hazardous Substances) RoHS (Restriction ofHazardous Substances) |
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REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration,Evaluation, Authorization and Restriction of Chemicals) |
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About Exhaust Fans
More
About Sound Levels
Measured in decibels (dB), volume ratings indicate how much noise equipment makes. Some common volume levels include a whisper @ 20 dB, a refrigerator @ 40 dB, a conversation @ 60 dB, and a light machine shop @ 90 dB. OSHA recommends hearing protection for exposure to 80 dB and greater.
Direct-Drive Upblast Roof-Mount Exhaust Fans
Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. These exhaust fans draw stagnant and humid air out through your roof and then expel it up and away from the roof surface. All fans have a disconnect switch to turn off the power for servicing.
Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.
Fans | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Mounting Bases | |||||||||||||||
| Blade Dia. | Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Dia. | Ht. | Base Wd. | Wt., lbs. | Max. Ambient Temperature | Housing Material | Specifications Met | Each | Each | |||
Open Dripproof Motor Enclosure | ||||||||||||||||
120V AC, Single Phase—Hardwire | ||||||||||||||||
| 1 | 11" | 400 cfm @ 1/2 in. of H₂O 710 cfm @ 0 in. of H₂O | 60 dBA @ 5 ft. | 1,625 | 3/16 | 22" | 18" | 19" | 43 | 300° F | Aluminum | ETL Listed | 0000000 | 0000000 | 0000000 | 0000000 |
| 1 | 12" | 1,100 cfm @ 1/2 in. of H₂O 1,300 cfm @ 0 in. of H₂O | 68 dBA @ 5 ft. | 1,625 | 1/3 | 25 1/2" | 25 1/4" | 21" | 50 | 300° F | Aluminum | ETL Listed | 0000000 | 000000 | 0000000 | 000000 |
| 1 | 16" | 2,450 cfm @ 1/2 in. of H₂O 2,900 cfm @ 0 in. of H₂O | 69 dBA @ 5 ft. | 1,625 | 3/4 | 31 7/8" | 30 1/2" | 24 3/4" | 80 | 300° F | Aluminum | ETL Listed | 0000000 | 00000000 | 0000000 | 000000 |
Totally Enclosed Motor Enclosure | ||||||||||||||||
460V AC, Three Phase—Hardwire | ||||||||||||||||
| 2 | 24" | 7,400 cfm @ 0 in. of H₂O | 66 dBA @ 15 ft. | 1,750 | 3/4 | 30" | 20 3/4" | 36" | 208 | 122° F | Steel | __ | 0000000 | 00000000 | 0000000 | 000000 |
| 2 | 30" | 7,300 cfm @ 1/2 in. of H₂O 11,700 cfm @ 0 in. of H₂O | 66 dBA @ 15 ft. | 1,150 | 2 | 36" | 23 1/2" | 42" | 340 | 122° F | Steel | __ | 0000000 | 00000000 | 0000000 | 000000 |
| 2 | 36" | 14,800 cfm @ 0 in. of H₂O | 68 dBA @ 15 ft. | 1,150 | 1 | 44" | 26 3/4" | 48" | 370 | 122° F | Steel | __ | 0000000 | 00000000 | 0000000 | 000000 |
| 2 | 42" | 17,000 cfm @ 1/2 in. of H₂O 24,700 cfm @ 0 in. of H₂O | 75 dBA @ 15 ft. | 1,150 | 3 | 50" | 29 1/2" | 54" | 471 | 122° F | Steel | __ | 0000000 | 00000000 | 0000000 | 000000 |
| 2 | 48" | 25,500 cfm @ 1/2 in. of H₂O 34,300 cfm @ 0 in. of H₂O | 76 dBA @ 15 ft. | 1,150 | 5 | 56" | 38 3/4" | 60" | 650 | 122° F | Steel | __ | 0000000 | 00000000 | 0000000 | 000000 |
Belt-Drive Upblast Roof-Mount Exhaust Fans
Belt-drive fans are quieter and have a longer life span than direct-drive fans because components can be replaced if worn or damaged. These exhaust fans draw stagnant and humid air out through your roof and then expel it up and away from the roof surface. All fans have a disconnect switch to turn off the power for servicing. Fans are AMCA (Air Movement and Control Association) rated.
Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.
Fans | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Mounting Bases | |||||||||||||
| Blade Dia. | Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Dia. | Ht. | Base Wd. | Max. Temp., °F | Housing Material | Specifications Met | Each | Each | ||
Open Dripproof Motor Enclosure | ||||||||||||||
120/208-230V AC, Single Phase—Hardwire | ||||||||||||||
| 19" | 3,000 cfm @ 1/2 in. of H₂O 3,725 cfm @ 0 in. of H₂O | 65 dBA @ 5 ft. | 1,725 | 3/4 | 39 3/8" | 33 3/4" | 28" | 300° | Aluminum | AMCA Rated, ETL Listed | 0000000 | 000000000 | 0000000 | 0000000 |
208-230/460V AC, Three Phase—Hardwire | ||||||||||||||
| 24" | 4,900 cfm @ 1/2 in. of H₂O 6,250 cfm @ 0 in. of H₂O | 67 dBA @ 5 ft. | 1,700 | 1 1/2 | 43 3/8" | 37 1/2" | 33" | 300° | Aluminum | AMCA Rated, ETL Listed | 0000000 | 00000000 | 0000000 | 000000 |
Direct-Drive Downdraft Roof-Mount Exhaust Fans
Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. More economical than upblast roof-mount exhaust fans, these draw stagnant and humid air out through your roof and then direct it back toward the roof. All fans have a disconnect switch to turn off the power for servicing.
Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.
For technical drawings and 3-D models, click on a part number.
Fans | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Mounting Bases | |||||||||||||||
| Blade Dia. | Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Dia. | Ht. | Base Wd. | Wt., lbs. | Max. Ambient Temperature | Housing Material | Specifications Met | Each | Each | |||
Totally Enclosed Motor Enclosure | ||||||||||||||||
120V AC, Single Phase—Hardwire | ||||||||||||||||
| 1 | 10" | 60 cfm @ 1/2 in. of H₂O 500 cfm @ 0 in. of H₂O | Not Rated | 1,500 | 1/30 | 18 5/16" | 11 1/4" | 19" | 21 | Not Rated | Aluminum | ETL Listed | 0000000 | 0000000 | 0000000 | 0000000 |
| 1 | 12" | 430 cfm @ 1/2 in. of H₂O 830 cfm @ 0 in. of H₂O | Not Rated | 1,500 | 1/10 | 20 5/16" | 11 3/4" | 19" | 30 | Not Rated | Aluminum | ETL Listed | 0000000 | 000000 | 0000000 | 000000 |
| 1 | 14" | 520 cfm @ 1/2 in. of H₂O 1,100 cfm @ 0 in. of H₂O | Not Rated | 1,100 | 1/6 | 27 5/16" | 14 5/8" | 21" | 39 | Not Rated | Aluminum | ETL Listed | 0000000 | 000000 | 0000000 | 000000 |
| 1 | 18" | 1,200 cfm @ 1/2 in. of H₂O 2,400 cfm @ 0 in. of H₂O | Not Rated | 1,100 | 1/3 | 33 9/16" | 16 3/8" | 26" | 60 | Not Rated | Aluminum | ETL Listed | 0000000 | 000000 | 0000000 | 000000 |
Open Dripproof Motor Enclosure | ||||||||||||||||
120V AC, Single Phase—Hardwire | ||||||||||||||||
| 2 | 11" | 600 cfm @ 1/2 in. of H₂O 800 cfm @ 0 in. of H₂O | 57 dBA @ 5 ft. | 1,625 | 3/16 | 23 3/4" | 16 1/4" | 19" | 37 | Not Rated | Aluminum | ETL Listed | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 12" | 950 cfm @ 1/2 in. of H₂O 1,250 cfm @ 0 in. of H₂O | 62 dBA @ 5 ft. | 1,625 | 1/4 | 26 1/4" | 19 1/8" | 21" | 53 | Not Rated | Aluminum | ETL Listed | 0000000 | 000000 | 0000000 | 000000 |
| 2 | 14" | 2,100 cfm @ 0 in. of H₂O 1,800 cfm @ 1/2 in. of H₂O | 66 dBA @ 5 ft. | 1,625 | 1/2 | 29 3/4" | 21 3/4" | 21" | 56 | Not Rated | Aluminum | ETL Listed | 0000000 | 000000 | 0000000 | 000000 |
Belt-Drive Downdraft Roof-Mount Exhaust Fans
Belt-drive fans are quieter and have a longer life span than direct-drive fans because components can be replaced if worn or damaged. More economical than upblast roof-mount exhaust fans, these draw stagnant and humid air out through your roof and then direct it back toward the roof.
Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.
Fans | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Mounting Bases | |||||||||||
| Blade Dia. | Airflow @ Static Pressure | Volume | Motor Speed, rpm | Power, hp | Dia. | Ht. | Base Wd. | Housing Material | Each | Each | ||
Open Dripproof Motor Enclosure | ||||||||||||
120/208-230V AC, Single Phase—Hardwire | ||||||||||||
| 16" | 2,800 cfm @ 1/2 in. of H₂O 3,200 cfm @ 0 in. of H₂O | 70 dBA @ 5 ft. | 1,145 | 3/4 | 33 11/16" | 29 1/4" | 26" | Aluminum | 0000000 | 000000000 | 0000000 | 0000000 |
| 20" | 4,900 cfm @ 1/2 in. of H₂O 5,400 cfm @ 0 in. of H₂O | 74 dBA @ 5 ft. | 1,080 | 1 1/2 | 38 1/4" | 31 3/4" | 30" | Aluminum | 0000000 | 00000000 | 0000000 | 000000 |
208-230/460V AC, Three Phase—Hardwire | ||||||||||||
| 24" | 6,900 cfm @ 1/2 in. of H₂O 7,750 cfm @ 0 in. of H₂O | 73 dBA @ 5 ft. | 875 | 2 | 44 1/4" | 39 11/16" | 33" | Aluminum | 0000000 | 00000000 | 0000000 | 000000 |
Wind-Driven Roof-Mount Exhaust Fans
Designed to spin freely with the slightest breeze, these fans create a vacuum that draws air out from buildings and ventilation systems—no electricity required. They are also known as turbine ventilators. Mount fans on your roof away from wind obstructions.
Optional mounting bases are sold separately.
Galvanized Steel | Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|---|
| Base Dia. | Overall Ht. | Airflow | Thick. | Max. Temp., °F | Each | Each | ||
| 6" | 14 1/2" | 110 cfm @ 4 mph | 0.018" | 150° | 0000000 | 0000000 | 0000000 | 0000000 |
| 8" | 15 1/2" | 195 cfm @ 4 mph | 0.018" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 10" | 16 3/4" | 305 cfm @ 4 mph | 0.018" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 12" | 17 1/4" | 440 cfm @ 4 mph | 0.024" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 14" | 20" | 600 cfm @ 4 mph | 0.024" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 16" | 22 1/2" | 790 cfm @ 4 mph | 0.024" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 18" | 24" | 1,000 cfm @ 4 mph | 0.024" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 20" | 24 1/2" | 1,200 cfm @ 4 mph | 0.024" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 24" | 29 1/2" | 1,700 cfm @ 4 mph | 0.024" | 150° | 0000000 | 000000 | 0000000 | 000000 |
| 30" | 32" | 2,700 cfm @ 4 mph | 0.03" | 150° | 0000000 | 000000 | 0000000 | 00000000 |
| 36" | 38" | 4,000 cfm @ 4 mph | 0.03" | 150° | 0000000 | 000000 | 000000 | 00 |
All bases have a square bottom, round top, and flashing to simplify installation.
To Order: For slope bases, please specify pitch: 1/12-11/12 in increments of 1/12. To determine pitch, use an angle indicator or divide rise by run (see illustration). For instance, if your roof rises 5" in 12" of horizontal space, your pitch is 5/12.
Flat Bases | Straight Bases | Slope Bases | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Outlet Dia. | Base Wd. | Ht. | Flashing Wd. | Material | Each | Each | Each | |||
| 8" | 10" | 10" | 4" | Galvanized Steel | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 0000000 |
| 10" | 12" | 10" | 4" | Galvanized Steel | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 000000 |
| 12" | 14" | 10" | 4" | Galvanized Steel | 0000000 | 00000 | 0000000 | 00000 | 0000000 | 000000 |
| 14" | 16" | 10" | 4" | Galvanized Steel | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
| 16" | 18" | 10" | 4" | Galvanized Steel | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
| 18" | 22" | 10" | 4" | Galvanized Steel | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
| 20" | 24" | 10" | 4" | Galvanized Steel | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |
| 24" | 30" | 12" | 4" | Galvanized Steel | 0000000 | 000000 | 0000000 | 000000 | 0000000 | 000000 |