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Old 12-18-08, 09:55 PM   #2
Lurking Renovator
Join Date: Dec 2008
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I've got a vent with no flapper as well. The Big Box stores sell in-line plastic flappers ($5) that you can just add to the duct with gear clamps if you don't want to mess with the exterior part. I didn't see them 'till I'd already bought a new vent, but I'm adding it anyway (2 flaps better than 1?). I'm also re-doing my bathroom fan vent duct (which currently dumps straight into the attic!) & found pre-insulated flexible ducts which prevent condensation from dripping down into the bathroom. One length will do the bathroom vent & my dryer.
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