FILTER HOG HAIR 20X22X1 FOR M3, M7 SERIES FURNACE WASHABLE

Poly-Flo polyester filters are a new breakthrough in filters..
Designed to replace expensive hog hair filters..
Stiff filter measures 20″ wide x 22″ long x approximately 1/2″ thick..
Fits M3RL andM7RLfurnaces-.
Washable.
Cleans easily with water..
Easily trimmed if desired but a tight fit is best..
Flame-retardent.. Sold 1 each..
UL CLASS II. FMVSS 302 CERTIFIED..
100% Polyester Construction..
Available in rolls and pre-cuts (1/2″ and 1″ thick)..
Cuts to full size of opening with scissors eliminating air by-pass..
Rigid construction – needs no frame..
Low resistance to air flow – saves money!.
Fibers are unaffected by mositure..
Safe to handle – no fiberglass or sharp edges..
Bi-directional air flow.. 80-90% dust retention..
Flame Retardent – self extinguishging..