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