Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

Ordered 3 and installed in 110cfm bath exhaust ducts. All work fine, louvers opening about 75%. Spring closure is strong enough to not bounce during air pressure changes in the house. Fits welll in duct. Nice sturdy steel sleeve holding damper vanes & good closure seal. Seal around unit, as others have said is poorly applied by factory but is easy to fix.

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

True diameter much less than diagram. With 6" you really get about 4.75". Therefore, you must use an 8" for 750CFM fan and connect the 6" pipe to the inside instead of the damper (or use adapter if you can find one). Butterfly valve works good in horizontal or up position positions (but not down). Gasket only rated to 180F but NFPA-96 is 300F. It will work well on most residential ranges/rangetops but may not for the commercial grade ones used in some homes. Although most places don't get below -22F this item should be rated better for cold climates when you can really benefit from a damper. I think it's a very good product relative to the competition. I should go into the duct business...

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

In kitchen

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

for all exhaust fans when doing a roof

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

This 6 inch backdraft damper was used to control condensation from a vent tube going from the kitchen to the outside, as the only device was a flapper on the top of the microwave. The condensation over the years has dripped onto the drywall on the ceiling and wall above the microwave, causing patching to be needed.

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

This product is great. Super easy to install and has completely stopped the cold drafts that used to come in through our kitchen cooktop exhaust during the winter. Highly recommend this product.

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

Easy to install! Springs a little weak!

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

Over all a good product.

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

Simple check valve for exhaust duct with more than one exhaust fan. Placed upstream from second exhaust connection to prevent blowback into upstream connection. Simple installation

Comments about American Aldes Aldes 6" Backdraft Damper - BDD6:

Arrived quickly and in good condition