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

Can be ordered in packages of 2 each only

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

A higher MERV rating means that the air filter that you are about to purchase possesses a higher amount impurity filtration ability than your ordinary filter

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.