Commercial Door Operator, Hoist/Left 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