Carbon Filter, Filter Type , Performance Rating MERV 17, Actual Depth 1 1/8 in, Actual Height 10 9/16 in, Actual Width 8 9/16 in, Compatible Grainger Part Number 2HPB8, 2HPB9, Compatible Manufacturer Model Number 2HPB8, 2HPB9, Number of Filters 1, Media Material Coconut Shell, Filter Layer Type Carbon, Nominal Depth 10 3/4 In., Nominal Height 1 1/4 In., Nominal Width 8 13/16 In., Filters Down To 0.3 micron