20 in x 25 in x 4 in Synthetic Furnace Air Cleaner Filter, MERV 11 2 PK, Bestair Pro, Mfr#: NRSG211-11-2B

Furnace Air Cleaner Filter, Filter Type Pleated, Performance Rating MERV 11, Actual Depth 3 3/4 in, Actual Height 28 1/4 in, Actual Width 16 in, Compatible Manufacturer Model Number Aprilaire Space Gard 2200, Aprilaire Space Gard 2250, Lennox PMAC-20C, Number of Filters 2, Media Material Synthetic, Filter Layer Type Electrostatic, Nominal Depth 4 in, Nominal Height 20 in, Nominal Width 25 in, Filters Down To 0.3 micron, Filters Out Auto Emission Particulates, Dust, Filter Efficiency 65 Percent