In Line Duct Back Draft Blockers

Whole house fan replacement shutters.

In line duct back draft blockers.

Our premium back draft damper is a non mechanical in line one way air flow valve that requires minimal pressure to operate has no moving parts and tested to ul 723 standards. Rubber gasket provide a friction fit and air tight seal. Radon test kit to check indoor air quality. Back draft blocker backdraft damper dryer vent hose inline extractor fan vent back draught shutter 4 inch 3 9 out of 5 stars 44.

California title 24 compliant and wi fi controlled. Us 4 04 8 75 16. Get the full force of your fan with this non restrictive damper which fits snugly inside the duct. Energy efficient insulated whole house fans r 38 and r 50.

Inline vent draft blocker helps to prevent cold air from entering the home through the vent. Get the full force of your fan with this non restrictive damper which fits snugly inside the duct. The flap opens when the dryer or fan is operating to allow the air and lint to exhaust. Draft blocker backdraft damper duct draft stopper backflow preventer inline fan vent vent deflector 4 inch.

5 sizes available our premium back draft damper is the ultimate one way air flow. Details about draft blocker backdraft damper duct draft stopper backflow preventer 6 inch. Our premium back draft damper is a non mechanical in line one way air flow valve that requires minimal pressure to operate has no moving parts and tested to ul 723 standards. Fantech rsk4 in line backdraft damper 4 diameter duct galvanized.

Back draft blocker backdraft damper dryer vent hose inline extractor. Sized slightly less than the internal diameter of the duct to slip easily into duct. Pipe draft blocker backdraft damper ventilation duct inline extractor fan vent back draught shutter 5 0 store. The flap remains closed when the dryer or fan is turned off.

Premium and economy in line duct back draft blockers. Back draft damper is a non mechanical in line one way air flow valve that requires minimal pressure to operate has no moving parts and tested to ul 723 standards. The bathroom or the hot steamy air from the bathroom blasting into the dryer. Our premium back draft damper is a non mechanical in line one way air flow valve that requires minimal pressure to operate has no moving parts and tested to astm e84 ul 723 and nfpa 255 standards.

New user coupon on orders over us 4 00. Get the full force of your fan with this non restrictive damper which fits snugly inside the duct. Non mechanical in line one way air flow valve that requires minimal pressure to operate has no moving parts. Eliminates cold air back drafts in the winter saving heating loss.