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Bathroom Exhaust Fan Backdraft Damper

Bathroom Exhaust Fan Backdraft Damper

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. Get the full force of your fan with this non-restrictive damper which fits snugly inside the duct. 5 sizes available.

Bathroom backdraft damper was slightly modified by increasing the spring tension.

About one-third of the fans that are supposed to be exhausting through the roof are exhausting to a cap with a backdraft damper that is stuck closed, which causes a good portion of the warm, moist air to exhaust in to the attic space.

I am going to install Panasonic exhaust fans in our bathrooms in new construction through an unvented attic.. The Panasonic fan comes with a built-in damper and their installation guides mention using a wall cap with a damper too. This means there are two dampers.

BROAN offers the widest variety of ventilation fans in the industry. For the latest high-performance, ENERGY STARĀ® Certified solution to today’s green building requirements, or ultra quiet operation for a comfortable environment, BROAN offers stylish options to fit any situation from a retrofit to a new

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