Pad Refills (Pack of 6 Pads) - 21" x 23 1/8" x 3/4" Quantity:Default PACK of 6 pads for

PACK of 6 pads for Pad and Frame Air Filters

these can be purchased in any conceivable size

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

the greater it's resistance to airflow

We can make custom air filters in heights and widths ranking from 6 inches to 36 7/8 inches with increments in 8ths of an inch

Pad Refills (Pack of 6 Pads) - 21" x 23 1/8" x 3/4" Quantity:Default PACK of 6 pads forPACK 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.