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.
Direct-Drive Wall-Mount Exhaust Fans
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.
Fans with louvers create a weather-tight seal when they're turned off. The louvers open automatically on startup and spring closed when not in use.
Weather hoods (sold separately) help extend the life of your exhaust fan by protecting it from harsh weather, such as severe wind, and debris.
Fans (Includes Louvers) | |||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
For Opening | Overall | Mounting Hole | Weather Hoods | ||||||||||||||||
| Blade Dia. | Airflow, cfm | Volume | Motor Speed, rpm | No. of Speeds | Power, hp | Ht. | Wd. | Ht. | Wd. | Dp. | Frame Material | Blade Material | Dia. | Location | No. of | Each | Each | ||
| 20" | 3,100 | Not Rated | 1,725 | 1 | 1/3 | 22" | 22" | 23 1/2" | 23 1/2" | 18 3/4" | Galvanized Steel | Aluminum | 3/16" | Frame | 4 | 0000000 | 0000000 | 00000000 | 0000000 |
Direct-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. 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. All have an open dripproof motor enclosure for relatively clean, dry, indoor locations. They also have a wire mesh inlet guard to protect the fan from debris.
For Opening | Overall | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blade Dia. | Airflow, cfm | Volume | Motor Speed, rpm | No. of Speeds | Power, hp | Ht. | Wd. | Ht. | Wd. | Dp. | Housing Material | Frame Material | Blade Material | Specifications Met | Each | |
120V AC, Single Phase—Hardwire | ||||||||||||||||
| 16" | 2,500 | 61 dBA @ 5 ft. | 1,300 | 1 | 1/2 | 21 1/4" | 21 1/4" | 23 1/2" | 23 1/2" | 25 1/4" | Steel | Galvanized Steel | Aluminum | C-UL Listed, UL Listed | 00000000 | 000000000 |
| For Airflow, cfm | Motor Speed, rpm | Power, hp | Each | |
120V AC, Single Phase | ||||
|---|---|---|---|---|
| 2,500 | 1,300 | 1/2 | 00000000 | 0000000 |
Collars for Wall-Mount Exhaust Fans
Connect your wall-mount exhaust fan to a louver. One side of the collar fits around your exhaust fan and the other includes a flange for mounting a louver. Overall height and width include the mounting flange.
Note: To be compatible with the fan, the collar must be larger than the overall fan dimensions. To be compatible with the louver, the collar's For Louvers That Fit Opening Height and Width must match the louver's For Opening Width and Height.
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.
Fans that cannot be sold to the listed areas are restricted by energy efficiency requirements.
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 Temp., °F | Housing Material | Cannot Be Sold To | Each | Each | |||
Totally Enclosed Motor Enclosure | ||||||||||||||||
460V AC, Three Phase—Hardwire | ||||||||||||||||
| 2 | 30" | 7,300 cfm @ 1/2 in. of H₂O 11,700 cfm @ 0 in. of H₂O | 66 dBA @ 5 ft. | 1,150 | 2 | 36" | 23 1/2" | 42" | 340 | 120° | Steel | CA | 0000000 | 000000000 | 0000000 | 0000000 |