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