Standard Skeleton Axial Fan Fan Shape Skeleton Mounting Eye O.C. 4 1/8 in Height 4 7/16 in Depth 1 1/2 in Width 4 7/16 in CFM @ 0.000-In. SP 110/92 Watts 21/22 Voltage 230V AC 60/50 Hz 0.12/0.14 Amps Electrical Connection - Fans Lead Wires Sound Level 48/43 IP Rating IP20 Mounting Position Horizontal Bearing Type Sleeve 3000/2600 RPM Motor Design Shaded Pole Motor Insulation Class A Thermal Protection Impedance Max Ambient Temp 158 Degrees F Blade Material Polybutylene