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insulation near bathroom fan

I am installing am exhaust fan in the wall of my bathroom. Is there a certain amount of installation I should cut back for when I am installing it? Should the exhaust hose not touch any insullation? Any help would be appreciated.

Re: insulation near bathroom fan

Cut back just enough to fit the fan box in, without compressing the insulation. Don't worry about insulation touching the box here and there.

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