Furnace Air Cleaner Filter, Filter Type Pleated, Performance Rating MERV 11, Actual Depth 4 1/4 in, Actual Height 16 in, Actual Width 27 3/4 in, Compatible Manufacturer Model Number Aprilaire Space Gard 2140, Aprilaire Space Gard 2400, PMAC12, Number of Filters 2, Media Material Synthetic, Filter Layer Type Electrostatic, Nominal Depth 6 in, Nominal Height 16 in, Nominal Width 27 in, Filters Down To 0.3 micron, Filters Out Auto Emission Particulates, Dust, Filter Efficiency 65 Percent