Pad Refills (Pack of 6 Pads) - 20" x 23" x 1" Quantity:Default these can be purchased in

these can be purchased in any conceivable size

PACK of 6 pads for Pad and Frame Air Filters

degrade and restrict air flow

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

Either way

Pad Refills (Pack of 6 Pads) - 20" x 23" x 1" Quantity:Default these can be purchased inPACK 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.