About Exhaust Fans
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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.
Belt-Drive Wall-Mount Exhaust Fans with Louvers
These fans come complete with a movable-blade louver. The louvers are gravity operated so they open only when air flows through them, which prevents backdrafts. Belt-drive fans are quieter and have a longer life span than direct-drive fans because components can be replaced if worn or damaged. Use these fans to draw stagnant and humid air out of a room or area.
Fans with an open dripproof motor enclosure are for relatively clean, dry, indoor locations. Fans with a totally enclosed motor enclosure can be used in dirty, dusty, and damp environments.
For Opening | Overall | ||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Dia. | Airflow, cfm | Volume | Motor Speed, rpm | No. of Speeds | Power, hp | Ht. | Wd. | Ht. | Wd. | Dp. | Wt., lbs. | Max. Ambient Temperature | Housing Material | Frame Material | Blade Material | Mount. Fasteners Included | Mount. Hole Dia. | Each | |
Open Dripproof Motor Enclosure | |||||||||||||||||||
120V AC, Single Phase—Hardwire | |||||||||||||||||||
| 42" | 11,000 | 57 dB @ 5 ft. | 400 | 1 | 3/4 | 49" | 49" | 48 1/2" | 48 1/2" | 19" | 270 | 104° F | Steel | Steel | Steel | No | 3/16" | 0000000 | 000000000 |
Totally Enclosed Motor Enclosure | |||||||||||||||||||
230/460V AC, Three Phase—Hardwire | |||||||||||||||||||
| 42" | 11,000 | 57 dB @ 5 ft. | 400 | 1 | 3/4 | 49" | 49" | 48 1/2" | 48 1/2" | 25" | 250 | 104° F | Steel | Steel | Steel | No | 3/16" | 0000000 | 00000000 |
Blade | ||||
|---|---|---|---|---|
| Dia. | Material | No. of | Each | |
Single, Three Phase | ||||
| 42" | Steel | 4 | 00000000 | 0000000 |
Supply-Side Guards for Wall-Mount Exhaust Fans
Protect the supply side of your wall-mount exhaust fans from debris.
Overall | |||||||
|---|---|---|---|---|---|---|---|
| For Blade Dia. | Ht. | Wd. | Dp. | Material | Mounting Fasteners Included | Each | |
| 42" | 48 1/2" | 48 1/2" | 34 1/2" | Galvanized Steel | Yes | 00000000 | 0000000 |