MEDIA REPLACEMENT FILTER,16 In. X 20 In.,MERV, Filter Type Panel, Performance Rating MERV 11, Actual Depth 6 3/4 in, Actual Height 16 1/4 in, Actual Width 20 7/16 in, Nominal Depth 6 in, Nominal Height 16 in, Nominal Width 20 in, Filters Down To 0.3 micron, Filter Efficiency 32 to 96 Percent, Standards Refrigerating and Air-Conditioning Engineers Standard 522-1999