Pad Refills (Pack of 6 Pads) - 19 1/4" x 19 1/4" x 1" Quantity:Default these can be purchased in

these can be purchased in any conceivable size

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

This is a 5" MERV 10 HIGH PERFORMANCE AIR FILTER

so it can provide a lifetime of dependable service

In general

Pad Refills (Pack of 6 Pads) - 19 1/4" x 19 1/4" 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.