The American Metal Filter Company S-4020 is a compatible replacement for the following microwave filter:
The Imperial Cal S-4020 Comp. Range Hood Grease Filter, manufactured by the American Metal Filter Company, is a compatible replacement for the Imperial Cal S-4020 aluminum air filter. This range hood filter replacement fits ducted range hoods, ductless range hoods, and over-the-counter microwaves to eliminate grease from your air. This range filter is washable and is constructed out of durable aluminum and aluminum foil. This range hood filter measures 11 3/4" x 19 15/16" x 1/2".