Commercial Door Opener, Hoist/Right Hand Mount, Max. Door Height (Ft.) 14, Max. Door Width (Ft.) 22, Motor Type Medium Duty, Motor HP 1/2 hp, Voltage 115 V, A safe and easy way to operate small rolling doors and grilles or industrial sectional doors with high or vertical lift, Reversal System Adjustable Friction Clutch, Radio Receiver -, -, Standards -, Includes Wall mounted 3-button control station, Commercial Photo Eyes