The design concept was to eliminate icy drafts falling from central a/c grilles in the fall/winter, and to reduce the consequent energy costs of heat loss. An additional benefit of the covers is the prevention of moisture, and subsequently mold/mildew, from building up in the ductwork. A high density foam surround completely seals the clear plastic shields, which are affixed with a hook and locking lanyard to each grille. 3 U.S. patents have been awarded for the A-C DraftShields products.
The design concept was to eliminate icy drafts falling from central a/c grilles in the fall/winter, and to reduce the consequent energy costs of heat loss. An additional benefit of the covers is the prevention of moisture, a...
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