Pad Refills (Pack of 6 Pads) - 21 1/4" x 21 1/4" x 3/4" Quantity:Default The "Practical Pleat" contains over

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

This is designed to fit into 1" Return Air Grilles

we even have the odd sizes

so it can provide a lifetime of dependable service

Includes one Frame and PACK of 6 pads

Pad Refills (Pack of 6 Pads) - 21 1/4" x 21 1/4" x 3/4" Quantity:Default The "Practical Pleat" contains overPACK 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.