Pad Refills (Pack of 6 Pads) - 21 1/2" x 23 1/2" x 1" Quantity:Default We look forward to delivering

We look forward to delivering our American-made

They are easy to install with custom air filters made to the sizes that you specify

Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

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

This is designed to fit into 1" Return Air Grilles

Pad Refills (Pack of 6 Pads) - 21 1/2" x 23 1/2" x 1" Quantity:Default We look forward to deliveringPACK 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.