White Rodgers 20"X 26' X 5" Replacement Air Filter Media # FR2000-100 18.5x17x1 or other sources

or other sources

The filter media is supported by an open steel mesh and enclosed by a high-strength

on the market

Cover Size: 35 3/8 x 30 7/8 x 34 (L x W x H)

White Rodgers 20"X 26' X 5" Replacement Air Filter Media # FR2000-100 18.5x17x1 or other sourcesFeatures: MERV 8 2000 CFM 20 x 26 x 5 nominal size Attracts common large household allergens like dust, pollen, and mold spores Durable construction for easy, slide in replacement Disposable for convenience Check Monthly but replace as required, approximately every 3 to 6 months depending on furnace fan use and environmental conditions Fits: White Rodgers ACB2000 101 Filter Cabnet