Pad Refills (Pack of 6 Pads) - 20 1/8" x 24 3/8" x 1" Quantity:Default if not you can measure

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

Unlike some permanent custom air filters

The permanent frame is constructed of space-age plastics that are resistant to corrosion

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

Pad Refills (Pack of 6 Pads) - 20 1/8" x 24 3/8" x 1" Quantity:Default if not you can measurePACK of 6 pads for Pad and Frame Air Filters 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 outlets. Filtering inserts are shipped in an easily stored packet.