By not covering up your HVAC Return Grills and Vents， it's like leaving windows and doors open. Our insulated magnetic covers create a barrier around your returns 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.

Blocks cold drafts and heat-loss coming from HVAC return

Fits sizes from 12 in. x 12 in. up to and including 24 in. x 30 in.

Cut to fit size of return

Attaches to filter with ease

Foil and white layers surrounding air bubbles for R-5 insulation value

Re-usable

Save energy on your heating bill