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 70/76 Watts 11/11 Voltage 115V AC 60/50 Hz 0.13/0.11 Amps Electrical Connection - Fans Terminals Sound Level 36/38 IP Rating IP20 Mounting Position Horizontal Bearing Type Sleeve 2200/2000 RPM Motor Design Shaded Pole Motor Insulation Class A Thermal Protection Impedance Max Ambient Temp 158 Degrees F