replying to Charles Spitzer, Linda wrote:
I have a jenn air flapper on the outside of my house with a screen back some
distance so small animals cannot get inside the crawl space. It has been
checked by the installer twice and said to be ok. I think cardboard or
insulation needs to be put where air comes in from the outside of this flapper
in back of. Maybe cardboard here.? I know a folded up piece of cloth does
not help- not warm.

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