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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Ceiling-Mount Lavatory Exhaust Fans
Use these fans to draw stagnant and humid air out of a room.
Fans that cannot be sold to the regions listed do not meet local energy efficiency requirements.
Guard | For Opening | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Airflow, cfm | Volume, dBA  | Lg. | Wd. | Wd. | Dp. | Housing Material | Mount. Fasteners Included | Mount. Hole Dia. | Mount. Location | Features | Specifications Met | Cannot Be Sold To | Each | ||
120V AC, Single Phase—Hardwire | ||||||||||||||||
| 1 | 3" | 50 | 48 | 9 1/4" | 9" | 7 1/4" | 3 5/8" | Steel | No | 1/8" | Ceiling, Wall | Backdraft-Preventing Damper | UL Listed | CO, DC, MA, MD, NJ, NV, NY, OR, RI, VT, WA | 0000000 | 000000 |
| 1 | 3" | 70 | 54 | 9 1/4" | 9" | 7 1/4" | 3 5/8" | Steel | No | 1/8" | Ceiling, Wall | Backdraft-Preventing Damper | UL Listed | CO, DC, MA, MD, NJ, NV, NY, OR, RI, VT, WA | 0000000 | 00000 |
For Duct | Guard | For Opening | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Oval Ht. | Oval Wd. | Airflow, cfm | Volume, dBA | Lg. | Wd. | Wd. | Dp. | Housing Material | Mount. Fasteners Included | Mount. Hole Dia. | Mount. Location | Features | Specifications Met | Each | |
120V AC, Single Phase—Hardwire | ||||||||||||||||
| 3" | 2" | 4" | 80 | 28 | 13 3/4" | 13" | 10 1/2" | 4" | Steel | Yes | 7/16" | Ceiling, Wall | Backdraft-Preventing Damper | C-UL Listed, UL Listed | 0000000 | 000000 |
DC Heater and Air Conditioner Duct Booster Fans
Often used in vehicles, these fans operate on DC power. Insert them directly into your ductwork. They give small heaters and air conditioners a boost to circulate air through ductwork. All 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 | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| For Duct Dia. | Airflow @ Static Pressure | Volume | Ht. | Wd. | Dp. | Max. Temp., °F | Housing Material | Blade Material | Mounting Fasteners Included | Mounting Hole Dia. | Each | |
12V DC—Hardwire | ||||||||||||
| 3" | 130 cfm @ 0 in. of H₂O | 65 dBA @ 15 ft. | 3 3/16" | 5" | 5 1/4" | 200° | Polypropylene Plastic | Polypropylene Plastic | No | 3/16" | 00000000 | 000000 |