Pad and Frame Air Filter (1 Frame and 6 Pads) - 20 3/4" x 22" x 1" Quantity:Default UL/ULC listed

UL/ULC listed

such as dust

This is designed to fit into 1" Return Air Grilles

if not you can measure it or check the HVAC unit and the owner‰۪s manual

You may know them as washable air or even permanent air filters

Pad and Frame Air Filter (1 Frame and 6 Pads) - 20 3/4" x 22" x 1" Quantity:Default UL/ULC listedIncludes one Frame and PACK of 6 pads The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts. The permanent frame is constructed of space age plastics that are resistant to corrosion, oxidation and deterioration. Filtering inserts are anti microbial and are more efficient in capturing particles, such as dust, ragweed, pollen, etc., from the air stream, than standard fiberglass filters purchased at retail