Pad Refills (Pack of 6 Pads) - 18 3/8" x 23 3/8" x 1" Quantity:Default A higher MERV rating means

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

than standard fiberglass filters purchased at retail outlets

allowing the grease to drain into through below

It is designed to inhibit growth of bacteria

mold and other fungi

Pad Refills (Pack of 6 Pads) - 18 3/8" x 23 3/8" x 1" Quantity:Default A higher MERV rating meansPACK 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.