Description
4″ Spring loaded backdraft damper
The back-draft damper is used to prevent air from reverse flowing through the fan (when powered off) which allows no contaminated air to escape from the area untreated.
4″ Spring loaded backdraft damper
The back-draft damper is used to prevent air from reverse flowing through the fan (when powered off) which allows no contaminated air to escape from the area untreated.
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