Is Closing Your Air Vents Helping Your Energy Bill?
Strong magnetism – The cover is made of thick strong magnetic material, which can firmly hold the vent in place. Custom Fit-The size (5.5 X 12) fits
DIYMAG 8Pack Strong Magnetic Vent Covers, Vent Covers for Home Floor Standard Air Registers, 5.5 inch X 12 inch Air Vent Covers for Floor Wall and
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