Furnace Air Cleaner Filter Filter Type Pleated Performance Rating MERV 11 Actual Depth 3 in Actual Height 19 3/4 in Actual Width 19 1/4 in Compatible Manufacturer Model Number 82755.032020 Number of Filters 2 Media Material Polyester Blend Filter Layer Type Electrostatic Nominal Depth 3 in Nominal Height 20 in Nominal Width 20 in Filters Down To 1 micron Filters Out Auto Emission Particulates Dust Filter Efficiency 60 to 65 Percent Air Flow @ 300 fpm 833 cfm