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 84/92 cfm, Watts 13/13 W, Voltage 115V AC, 50/60 Hz Hz, 0.17/0.16 A Amps, Electrical Connection - Fans Terminals, Sound Level 48/45, IP Rating IP33, Air Flow 91/77 cfm, Mounting Position Vertical or Horizontal, Bearing Type Ball, 2400/2050 RPM RPM, Motor Design Shaded Pole, Motor Insulation Class A