Compact Axial Fan Filter and Guard Assembly Radiator Connection 3 1/8 in Media Material Polyurethane Foam Fits Fan Shape Square 3 1/8 in Height 3 1/8 in Width 3/8 in Depth Mounting Eye O.C. (4) 2-13/16 in Frame Material Plastic Finish Black PPI Rating 30 Includes Fan Guard Filter Media and Retainer Standards E56070 E60874 RoHS UL