Polyester Prefilter, Filter Type Panel, Performance Rating MERV 6, Actual Depth 2 in, Actual Height 10 in, Actual Width 19 in, Compatible Grainger Part Number 2YFU7, Compatible Manufacturer Model Number F-981-3, Number of Filters 6, Filter Layer Type 2-Ply Polyester, Nominal Depth 2 in, Nominal Height 10 in, Nominal Width 19 in, Filters Down To 3 micron, Filters Out Dust, Mold, Filter Efficiency 50 Percent, Includes Frame No, Media Area 1.3 sq ft, Standards ASHRAE 52 Test Method