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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.
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 |
| 4" | 230 cfm @ 0 in. of H₂O | 69 dBA @ 15 ft. | 4 3/16" | 6" | 5 1/4" | 200° | Polypropylene Plastic | Polypropylene Plastic | No | 3/16" | 00000000 | 00000 |