The American Metal Filter Company H-1521 is a compatible replacement for the following range filter:
The Imperial Cal H-1521 Comp. Grease Microwave Filter is a compatible replacement for the Imperial Cal H-1521 microwave filter. Used in both ducted and ductless range hoods and over-the-counter microwaves, this microwave air filter removes grease from the air. This microwave grease filter is built with a sturdy aluminum frame that surrounds layers of expanded aluminum and aluminum foil. This range hood filter replacement is washable and measures 4 5/8 inches x 16 1/2 inches x 1/2 inches.