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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Exterior-Wall-Mount Exhaust Fans
Good when you don't have room to mount an exhaust fan inside your facility, these fans attach to openings in outside walls. Use them to draw stagnant and humid air out of a room or area. Belt-drive fans are quieter than direct-drive fans. They also last longer because their components can be replaced if damaged. Fans with a totally enclosed motor enclosure can be used in dirty, dusty, and damp environments. They mount through the wall, so you'll need to cut a hole on the inside of the wall as well.
Note: Airflow depends on the resistance created by louvers, filters, and ductwork in your system. 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.
For Opening | Overall | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Dia. | Airflow @ Static Pressure | Drive Type | Motor Speed, rpm | Power, hp | Dia. | Ht. | Wd. | Dia. | Dp. | Motor Enclosure Type | Includes | Each | |
120/230V AC, Single Phase—Hardwire | |||||||||||||
| 50" | 16,200 cfm @ 0.2 in. of H₂O 12,100 cfm @ 0 in. of H₂O | Belt | 1,725 | 1 | 50" | 56" | 56" | 63" | 47 1/4" | Totally Enclosed | Louvers | 0000000 | 000000000 |
230/460V AC, Three Phase—Hardwire | |||||||||||||
| 50" | 12,100 cfm @ 0.2 in. of H₂O 21,600 cfm @ 0 in. of H₂O | Belt | 800 | 1/2 | 50" | 56" | 56" | 63" | 47 1/4" | Totally Enclosed | Louvers | 0000000 | 00000000 |