Pad Refills (Pack of 6 Pads) - 12" x 18" x 1" Quantity:Default the greater it's resistance to

the greater it's resistance to airflow

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

You may know them as washable air or even permanent air filters

Either way

We look forward to delivering our American-made

Pad Refills (Pack of 6 Pads) - 12" x 18" x 1" Quantity:Default the greater it's resistance toPACK 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.