Furnace Air Cleaner Filter Filter Type Pleated Performance Rating MERV 8 Actual Depth 4 1/2 in Actual Height 18 1/2 in Actual Width 23 1/2 in Compatible Manufacturer Model Number 82105.052025 Number of Filters 2 Media Material Polyester Blend Filter Layer Type Electrostatic Nominal Depth 5 in Nominal Height 20 in Nominal Width 25 in Filters Down To 3 micron Filters Out Pet Dander Dust Mold Filter Efficiency 30 to 35 Percent Air Flow @ 300 fpm 1 042 cfm Frame Material Cardboard