Furnace Air Cleaner Filter Filter Type Pleated Performance Rating MERV 11 Actual Depth 6 in Actual Height 27 1/8 in Actual Width 16 in Compatible Manufacturer Model Number 401 Number of Filters 2 Media Material Synthetic Filter Layer Type Electrostatic Nominal Depth 6 in Nominal Height 28 in Nominal Width 16 in Filters Down To 0.3 micron Filters Out Auto Emission Particulates Dust Filter Efficiency 65 Percent Air Flow @ 300 fpm 1 024 cfm Frame Material Cardboard