Standard Square Axial Fan, Fan Shape Square, Mounting Eye O.C. 4 1/8 in, Height 4 11/16 in, Depth 1 1/2 in, Width 4 11/16 in, Fan Cord Length No Cord, CFM @ 0.000-In. SP 25/28 cfm, Watts 12/12 W, Voltage 120V AC, 50/60 Hz Hz, 0.14/0.13 A Amps, Electrical Connection - Fans Terminals, Sound Level 46/47, IP Rating IP33, Air Flow 84/92 cfm, Mounting Position Vertical or Horizontal, Bearing Type Ball, 2550/2750 RPM RPM, Motor Design Shaded Pole, Motor Insulation Class A