Pad Refills (Pack of 6 Pads) - 18" x 36" x 1" Quantity:Default the A+2000 uses stage loading

the A+2000 uses stage loading

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

and long service life which reduces HVAC equipment maintenance and energy costs

some just refer to them as electrostatic filters

The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts

Pad Refills (Pack of 6 Pads) - 18" x 36" 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.