Standard Square Axial Fan, Fan Shape Square, Mounting Eye O.C. 4 1/6 in, Height 5 in, Depth 1 1/2 in, Width 4 3/4 in, CFM @ 0.000-In. SP 8.5/12.2, Watts 13/13, Voltage 230V AC, 60/50 Hz, 0.07/0.07 Amps, Electrical Connection - Fans Lead Wires, Sound Level 33/42.8, IP Rating IP20, Mounting Position Horizontal, Bearing Type Sleeve, 1400/2000 RPM, Motor Design Shaded Pole, Motor Insulation Class A, Thermal Protection Impedance, Max. Ambient Temp. 158 Degrees F, Blade Material Polybutylene WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov - Nickel (Metallic)