Bathroom exhaust damper options?

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Diamond Member
Nov 30, 2000
I have one of those 6" inline centrifugal bathroom fans.

I had a magnetic butterfly damper (I guess it's called) on it, but it was still drafty. I didn't know at the time that those only work vertically. I don't have enough room above the bathroom ceiling to run one of those vertically so I had it installed horizontally.

In searching around the net I see I can get a powered unit, but they are kind of pricey. I see another company offers some kind of cloth damper that is suppose to bunch itself together when the fan is off. I suppose that would be better than nothing, but it looks kind of sketchy.

Do you guy have any idea what I could use to keep the cold air from coming in?
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