Pad Refills (Pack of 6 Pads) - 17 1/4" x 35 1/4" x 1"PACK 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.

PACK of 6 pads for Pad and Frame Air Filters

built to last a lifetime

The "Practical Pleat" contains over 500% greater surface area than a MERV 10 one-inch pleat

than standard fiberglass filters purchased at retail outlets

please click HERE to read detailed brochure (Adobe Reader PDF file)

In general

This is designed to fit into 1" Return Air Grilles

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

Either way

from the air stream

and the greater the pressure drop it creates

One way to overcome this problem is to increase the surface area of the filter media