Air Filter, Filter Type Pleated, Performance Rating MERV 17, Actual Depth 2 1/2 in, Actual Height 11 11/16 in, Actual Width 18 3/16 in, Compatible Grainger Part Number 2YGA6, Compatible Manufacturer Model Number Trio1000, Trio1000P, Trio1000P2, ULTRA-SUN, Number of Filters 1, Media Material Activated Carbon, Polyester, Filter Layer Type Pre-filter, Activated Carbon, H13 HEPA, Nominal Depth 2 1/2 in, Nominal Height 11 11/16 in, Nominal Width 18 3/16 in, Filters Down To 0.3 micron