High-Velocity Industrial Fan, Non-Oscillating, Voltage 277V AC, 1 Phase, Air Velocity @ 20 Ft. 400 fpm, Motor HP 1/4 hp, Fan Mounting Location Wall with Dock Arm, Sound Level 63.1 dBA, Max. Ambient Temp. 105 Degrees F, Hz 60 Hz, Watts 304.7, Motor Type Permanent Split Capacitor, Drive Type Direct Drive, Height 20 in, Width 20 in