Pad Refills (Pack of 6 Pads) - 21" x 22" x 3/4" Quantity:Default The A+2000 line is easy

The A+2000 line is easy to maintain with no need to buy oils or adhesives to enhance effectiveness

They are easy to clean by simply backwashing every month with cold water so you don‰۪t need expensive cleaners

Any Kind of Filter's Extended Surface Pleated Filters outperform ordinary furnace filters with medium efficiency and are designed for lower pressure drop

In general

Either way

Pad Refills (Pack of 6 Pads) - 21" x 22" x 3/4" Quantity:Default The A+2000 line is easyPACK 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.