Garage Door Chain Hoist 1in Solid Keyed Shaft 4:1 Reduced Drive Jack Shaft Mount

Install Sprocket onto door shaft with key and set screws. Install the main unit to the wall so that the roller chain will be free of slack when installation is complete (shorten roller chain if needed). If not already completed during the previous step, install the roller chain between the main unit and sprocket on the door shaft (move the sprocket on the door shaft if necessary to ensure the sprockets are aligned).

• Garage Door Chain Hoist has a 4:1 reduction drive ratio.
• 4:1 reduction Includes sprocket, 22" of #41 roller chain, 26' of hand chain, 1 chain keeper, 2 shaft collars, 1 wall bracket and a 1/4" key
• No cable jumping, jackshaft mounting (only applicable to 1-inch solid shaftinstallation).
• Chain Hoist can be easily slid onto the shaft forinstallation, and users can operate it without the need for professional skills.
• Suitable for commercial garages, residential garages, industrial garages, andwarehouses (additional chains might be required for doors over 14 feet or for verticalift doors or high lift doors).