A cut-to-size sheet of foil bubble insulation that blocks cold drafts through air returns and vents that solid covers can't fit. It cuts down to any size from 12 x 12 inches up to 24 x 30 inches, so it handles large or odd-shaped vents. With an R-3 value it is a light barrier, not a full insulation layer, so it suits drafty return grates and winter vent sealing rather than whole-room insulation. It must come off before the air conditioning runs.
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Lowest price we've seen: $16.57 on Nov 11 at The Home Depot. Tracked across 1 store since Nov 11.
Buyers who used it for drafty returns report it does the job, with one calling it a great product to block out the draft. Reception is thin, so most feedback centers on how well it seals and fits.
This return vent insulation is a foil bubble sheet that blocks cold drafts coming through air returns and vents. It is meant for large or odd-sized vents that solid covers do not fit. It helps prevent heat loss, and it is reusable.
The sheet can be cut to any size from 12" W x 12" L up to and including 24" W x 30" L. For a return vent with a hinged grate, cut the sheet to the size of the filter, place it inside, and re-close the grate. It can also attach to the filter with the included double-sided tape.
For other vents, the sheet attaches to the outside of the vent with a fastener. Clear Velcro is recommended because it blends in with the color of the vent. No tools are required, and the white appearance blends in with air return grates.
