Lennox X6673-20″ X 25″ X 5″ HCF20-11 Air Filter, MERV 11 Filter Bundle with Sa
Manufacturer Lennox. Material Type Fiberglass, Magnet. Material Fiberglass, Magnet. Nominal Filter Size: 20x25x5. Actual Filter Size: 19-3/4″ x 24-3/4″ x 4-3/8″. Filter Shape Rectangular. Compatible Devices Air Conditioner, Air Purifier, Furnace.