Air Cleaner Filter Filter Type Pleated Actual Depth 8 13/16 in Actual Height 16 1/2 in Actual Width 16 15/16 in Compatible Grainger Part Number 4E441 Compatible Manufacturer Model Number CAC500M Nominal Depth 9 in Nominal Height 17 in Nominal Width 17 in Filters Out Dust Mold Smoke Filter Efficiency 0.95 Percent Includes Frame Yes Standards Class 2 UL