Filter, Filter Type , Performance Rating MERV 17, Actual Depth 9/16 in, Actual Height 10 7/16 in, Actual Width 4 1/2 in, Compatible Grainger Part Number 2HPE1, Compatible Manufacturer Model Number 2HPE1, Number of Filters 1, Nominal Depth 10 1/2 In., Nominal Height 4 5/8 In., Nominal Width 7/8 In., Filters Down To 0.3 micron, Filters Out , Viruses, Filter Efficiency 99.97 Percent, Frame Material Paper, Includes Frame Yes, Number of Layers 1