Pad Refills (Pack of 6 Pads) - 21 1/2" x 23 1/4" x 1" Quantity:Default the A+2000 uses stage loading

the A+2000 uses stage loading

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

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

high quality Air Filters to you

åÊWe look forward to delivering our American-made

Pad Refills (Pack of 6 Pads) - 21 1/2" x 23 1/4" x 1" Quantity:Default the A+2000 uses stage loadingPACK 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.