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About In-Line Draft Blockers

 
 

In-Line Draft Blockers

Specifically designed to stop backdrafts from your clothes dryer, bathroom exhaust fan, kitchen fan, pellet stove, direct vent water heater and direct vent furnace. Tested to UL723 standard for flame resistance.
Bathroom Fan Draft Blocker
Fits Any Bath Fan Standard 4" Duct!


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23 51 00 - Breechings, Chimneys, and Stacks
23 51 13 - Draft Control Devices
23 51 16 - Fabricated Breechings and Accessories
23 51 19 - Fabricated Stacks
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