For Duct Diameter For Duct Diameter |
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Airflow Airflow |
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Voltage Voltage |
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Power Source Power Source |
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Electrical Phase Electrical Phase |
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Drive Type Drive Type |
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Motor Enclosure Type Motor Enclosure Type |
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Power Power |
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Overall Height Overall Height | Show |
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Overall Height Overall Height | Hide |
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Maximum Temperature Maximum Temperature |
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Base Width Base Width |
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Electrical Connection Type Electrical Connection Type |
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Draft Direction Draft Direction |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense AcquisitionRegulations Supplement) |
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Volume Volume |
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Number of Speeds Number of Speeds |
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Mounting Hole Diameter Mounting Hole Diameter |
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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.
About Exhaust Fans
More
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.
Fans | ||||||||||||||||
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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 | 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 | 0000000 | 0000000 | 0000000 |
Direct-Drive Duct Fans
Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Also known as axial duct fans, these install inline in ductwork for use as an exhaust, supply, or booster fan. All fans have a totally enclosed motor enclosure, which can be used in dirty, dusty, and damp environments.
Note: Airflow depends on the resistance created by ductwork. This resistance, known as static pressure (SP), is measured in inches of water.
Overall | Mounting | |||||||||||||
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| For Duct Dia. | Airflow @ Static Pressure | Motor Speed | Power, hp | Dia. | Ht. | Dp. | Max. Temp., °F | Housing Material | Blade Material | Specifications Met | Hardware Included | Hole Diameter | Each | |
120V AC, Single Phase—Hardwire | ||||||||||||||
| 6" | 250 cfm @ 3/8 in. of H₂O 300 cfm @ 1/8 in. of H₂O | Not Rated | 1/10 | 11 3/4" | 11 3/4" | 9 5/8" | 140° | ABS/Polycarbonate Plastic | ABS/Polycarbonate Plastic | C-UL Listed, UL Listed | Yes | 0.244" | 00000000 | 0000000 |