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I was wondering if folks had any suggestions as to how to reduce cold air infiltration/drafts from bathroom exhaust vents.
I've found that in some of my bathrooms, cold air is coming into the bathroom from the overhead ceiling exhaust fan. When I go outside, I see that the exhaust pipe has a simple damper on it. I imagine that when the wind blows, it can easily get up and into the exhaust duct and the damper doesn't stop it.
Are there products that can help resolve this issue?