I recommend this product. It is fairly easy to install. It works best if your attic is decked with plywood at least around the opening, because you have to staple and caulk the tent in place. This item is not beneficial if your attic opening is in the garage.
Keeps insulation from falling out every time you pull down attic stairs.
Helps to keep conditioned air from escaping into attic. Or the unconditioned, unfiltered dirty air from entering home.
I have walked down many a hall way and felt a temperature difference from other rooms due to air infiltration.
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