The PowerMaster GSL slide door operator from North Shore Commercial Door is for use on refrigerator doors and sliding doors. PowerMaster's GSL operator for refrigerators and sliding doors has a high-starting torque motor with full overload protection. This American-made slide door operator has a heavy-duty worm gear reduction and solenoid brake, plus adjustable torque limiting clutch and positive chain-driven rotary limit switches. Disconnect the arm to easily switch to manual operation in case of a power failure. The unit is available in 1/2hp to 1hp horsepower with voltage from 115/230 1ph or 208/230/460 3ph. The operator, with heavy duty #41 roller chain included, has a three-button control station for open, close and stop operation. The baked-on gray powder coat finish was added for superior durability.