Furnace Air Cleaner Filter Filter Type Pleated Performance Rating MERV 8 Actual Depth 4 1/2 in Actual Height 19 3/4 in Actual Width 19 3/4 in Compatible Manufacturer Model Number 82655.0452020 Number of Filters 2 Media Material Polyester Blend Filter Layer Type Electrostatic Nominal Depth 5 in Nominal Height 20 in Nominal Width 20 in Filters Down To 3 micron Filters Out Pet Dander Dust Mold Filter Efficiency 30 to 35 Percent Air Flow @ 300 fpm 833 cfm Frame Material Cardboard