Axial Fan, Skeleton, 110 CFM @ 0.000-In SP, Voltage 115 AC, 60/50 Hz, Single Phase, Amps 0.24, Watts 20, Fan RPM 3000, 50 dBA, Height 4 7/16 In, Width 4 7/16 In, Depth 1 1/2 In, Mounting Holes O C 4 1/8 In, Vertical or Horizontal Mounting Position, Motor Insulation Class A, Impedence Thermal Protection, Max Ambient Temp 158 F, Ball Bearings