Standard Square Axial Fan, Fan Shape Square, Mounting Eye O.C. 1 15/16 in, Height 2 3/8 in, Depth 1 in, Width 2 3/8 in, CFM @ 0.000-In. SP 31.5 cfm, Watts 3.2 W, Voltage 12V DC, - Hz, 0.269 A Amps, Electrical Connection - Fans Lead Wires, Sound Level 41, IP Rating IP20, Mounting Position Vertical or Horizontal, Bearing Type Zero Friction Air, 6100 RPM RPM, Motor Design DC, Motor Insulation Class A, Thermal Protection Impedance, Max. Ambient Temp. 158 Degrees F, Blade Material Polybutylene