Standard Square Axial Fan Fan Shape Square Mounting Eye O.C. 4 1/8 in Height 4 11/16 in Depth 1 1/2 in Width 4 11/16 in CFM @ 0.000-In. SP 106 Watts 4.4 Voltage 230V AC 50/60 Hz 0.041 Amps Electrical Connection - Fans Terminals Sound Level 42 IP Rating IP20 Mounting Position Universal Bearing Type Ball 3350 RPM Motor Insulation Class E Thermal Protection Electronic Max Ambient Temp 167 Degrees F Blade Material Fiberglass Reinforced Polyamide