Pad Refills (Pack of 6 Pads) - 17 1/4" x 29 1/4" x 1" Quantity:Default Includes one Frame and PACK

Includes one Frame and PACK of 6 pads

with each stage capturing progressively smaller particles inside the filter

oxidation and deterioration

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

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

Pad Refills (Pack of 6 Pads) - 17 1/4" x 29 1/4" x 1" Quantity:Default Includes one Frame and PACKPACK 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.