Standard Square Axial Fan Fan Shape Square Mounting Eye O.C. 4 1/8 in Height 4 21/32 in Depth 1 1/2 in Width 4 2/3 in CFM @ 0.000-In. SP 209 Watts 30 Voltage 24V DC 1.25 Amps Electrical Connection - Fans Lead Wires Sound Level 67 IP Rating IP20 Mounting Position Vertical or Horizontal Bearing Type Ball 6800 RPM Motor Insulation Class E Thermal Protection Electronic Max Ambient Temp 149 Degrees F Blade Material Fiberglass Reinforced Plastic PA Housing Material Aluminum