AirFlo 20 inch Gravity Backdraft Damper Shutter
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Inside Mount Series 3200M - alum.
Outside Mount Series 3100M - alum.
DIMENSIONS: 23" x 23" x 2.5"
ROUGH IN-OPENING DIMENSIONS: 20" x 20"
- Model No.:
- Made In U.S.A.:
- Dampers, Shutters & Weather Hoods
- Blade Material:
Notice: Manufacturer's products features and specifications are subject to change without notice.
California Residents: WARNING- This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, please visit www.P65Warnings.ca.gov.
QUESTIONS & ANSWERSAsk a Question
Why is the pull chain recommended?
The pull chain is only if you are not using a fan in front of this shutter to blow it open. The pull-chain allows the shutter to be opened manually for air movement.
What is max CFM this can handle? Is this manual intake fan weather-proof? Does it have a bird/insect screen?
This Shutter / Damper is to be used with fans utilizing 3/4 HP motors or lower. This is not a fan, but does close automatically when the fan that blows through it is turned off. This Shutter / Damper does not come with a bird screen.
how do keep insects out
Insects can not enter when fan in On, and when fan is turned Off the shutters drop closed.