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
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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 | ||||||||||||
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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 | ||||||||||||
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 | 000000 |