Replacement Compact Axial Fan Filter Media, Radiator Connection 4 11/16 in, For Use With 4YD86, Media Material Polyurethane Foam, Fits Fan Shape Square, 4 9/16 in Height, 4 9/16 in Width, 1/8 in Depth, Finish Black, PPI Rating 45, Standards E60874, RoHS, UL, Package Quantity 5