Pad Refills (Pack of 6 Pads) - 20" x 20 1/2" x 3/4" Quantity:Default Can be ordered in packages

Can be ordered in packages of 2 each only

and the greater the pressure drop it creates

The "Practical Pleat" media is up to 28 times more effective at capturing particles than standard fiberglass panel filters

In general

To order washable electrostatic custom air filters you just need to know the size of the current air filter

Pad Refills (Pack of 6 Pads) - 20" x 20 1/2" x 3/4" Quantity:Default Can be ordered in packagesPACK 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.