Air Scrubber Filter, Filter Type , Performance Rating MERV 17, Compatible Grainger Part Number 4AYF5, Compatible Manufacturer Model Number F284, Number of Filters 4, Nominal Depth 2 in, Nominal Height 16 in, Nominal Width 16 in, Filters Down To 0.3 micron, Filters Out Dust, Smoke, Viruses, Filter Efficiency 95 Percent, Frame Material Cardboard, Includes Frame Yes, Standards ANSI, Package Quantity 4