Pad Refills (Pack of 6 Pads) - 23 3/4" x 23 3/4" x 1" Quantity:Default than standard fiberglass filters purchased

than standard fiberglass filters purchased at retail outlets

This is designed to fit into 1" Return Air Grilles

and long service life which reduces HVAC equipment maintenance and energy costs

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

degrade and restrict air flow

Pad Refills (Pack of 6 Pads) - 23 3/4" x 23 3/4" x 1" Quantity:Default than standard fiberglass filters purchasedPACK 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.