In Line Duct Back Draft Blockers

California title 24 compliant and wi fi controlled.

In line duct back draft blockers.

Inline vent draft blocker helps to prevent cold air from entering the home through the vent. Back draft blocker backdraft damper dryer vent hose inline extractor. Details about draft blocker backdraft damper duct draft stopper backflow preventer 6 inch. 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.

Eliminates cold air back drafts in the winter saving heating loss. Get the full force of your fan with this non restrictive damper which fits snugly inside the duct. Rubber gasket provide a friction fit and air tight seal. The bathroom or the hot steamy air from the bathroom blasting into the dryer.

New user coupon on orders over us 4 00. Fantech rsk4 in line backdraft damper 4 diameter duct galvanized. 5 sizes available our premium back draft damper is the ultimate one way air flow. Premium and economy 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. Radon test kit to check indoor air quality. 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.

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. Back draft blocker backdraft damper dryer vent hose inline extractor fan vent back draught shutter 4 inch 3 9 out of 5 stars 44. Us 3 39 7 35.

View details buy. Get the full force of your fan with this non restrictive damper which fits snugly inside the duct. 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. Whole house fan replacement shutters.

Get the full force of your fan with this non restrictive damper which fits snugly inside the duct. 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. Draft blocker backdraft damper duct draft stopper backflow preventer inline fan vent vent deflector 4 inch. Non mechanical in line one way air flow valve that requires minimal pressure to operate has no moving parts.