Pad and Frame Air Filter (1 Frame and 6 Pads) - 36" x 36" x 1" Quantity:Default the A+2000 uses stage loading

the A+2000 uses stage loading

the greater it's resistance to airflow

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

It is designed to inhibit growth of bacteria

This is designed to fit into 1" Return Air Grilles

Pad and Frame Air Filter (1 Frame and 6 Pads) - 36" x 36" x 1" Quantity:Default the A+2000 uses stage loadingIncludes one Frame and PACK of 6 pads The Pad and Frame Air Filter involves a permanent frame and replaceable filtration pad inserts. The permanent frame is constructed of space age plastics that are resistant to corrosion, oxidation and deterioration. 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