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FLTDI t1_iufjuu6 wrote

I'd use spray foam. Either temp range, is fine for exhaust air.

It'll help, but that vent isn't insulated at all, thin sheet metal has essentially no R value. I wonder if you can find a better version?

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RatArmy OP t1_iufm0x2 wrote

You mean changing out the vent itself? I suppose I could look into that. I'll have to see how it's secured in.

I'll look into it.

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Timbucktoooooo t1_iug4tte wrote

Don’t waste your time looking for an “insulated” vent. There’s no such thing. Just insulate around it inside the wall and make sure there’s a door on the outside part of it that keeps the air and critters from coming in but opens when the fan is blowing out.

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