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
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Dust-Resistant Direct-Drive Wall-Mount Exhaust Fans
Better suited for dirty, dusty, and damp environments than standard direct-drive fans, these have a totally enclosed motor enclosure. Direct-drive fans have fewer moving parts than belt-drive fans for less maintenance. Use these fans to draw stagnant and humid air out of a room or area.
Collars and louvers are sold separately. Use a collar to connect a wall-mount exhaust fan to a louver.
For technical drawings and 3-D models, click on a part number.
Fans | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Overall | Collars | ||||||||||||||||
| Blade Dia. | Airflow, cfm | Volume | Motor Speed, rpm | No. of Speeds | Power, hp | Ht. | Wd. | Dp. | Wt., lbs. | Max. Ambient Temperature | Frame Material | Blade Material | Each | Each | |||
120V AC, Single Phase—Hardwire | |||||||||||||||||
| 3 | 16" | 2,900 | 49 dBA @ 15 ft. | 1,750 | 1 | 1/3 | 24" | 24" | 12 5/8" | 37 | 104° F | Steel | Aluminum | 0000000 | 0000000 | 0000000 | 0000000 |
230/460V AC, Three Phase—Hardwire | |||||||||||||||||
| 5 | 18" | 3,900 | 66 dB @ 5 ft. | 1,750 | 1 | 1/2 | 24" | 24" | 10" | 42 | 104° F | Steel | Steel | 000000 | 000000 | 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.
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.
Downdraft Surface-Drying Fans
To quickly dry flat surfaces, this fan directs air downward. Use it to dry large flat surfaces such as floors with a concentrated stream of air. It can also be turned on its side.
Overall | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Airflow, cfm | Volume | No. of Speeds | Power, hp | Current, A | Outlet Dia. | Ht. | Wd. | Dp. | Cord Lg., ft. | Housing Material | Specifications Met | Each | ||
120V AC, Single Phase—Three Prong Plug | ||||||||||||||
Non-Oscillating | ||||||||||||||
| B | 2,600 | 73 dBA @ 5 ft. | Variable | 1/2 | 2.7 | 20" | 24" | 24 3/8" | 10 7/8" | 15 | Plastic | ETL Listed | 0000000 | 0000000 |