By not covering up your HVAC registers and vents， it's like leaving windows and doors open. Our insulated magnetic covers create a barrier around ceiling and wall registers eliminating heat loss and cold drafts during the winter when your Central Air Conditioner is not in use. If you want to reduce energy costs and feel more comfortable then this product is for you.
Energy savings
Save up to 10% annually on heating bills
Eliminates cold drafts
No tools required
Re-usable
Fits aluminum registers/vents 13 in. x 13 in.， 11 in. x 11 in. and 9 in. x 9 in. O.D.
Fits three sizes in one
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