Pad Refills (Pack of 6 Pads) - 7 1/2" x 7 1/2" x 3/4" Quantity:Default Filtering inserts are shipped in

Filtering inserts are shipped in an easily stored packet

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

The secret behind the A+2000‰۪s custom air filters performance is the patented stage loading/peak and valley design

if not you can measure it or check the HVAC unit and the owner‰۪s manual

Either way

Pad Refills (Pack of 6 Pads) - 7 1/2" x 7 1/2" x 3/4" Quantity:Default Filtering inserts are shipped inPACK 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.