Garage Door JR Jackshaft Mounting Chain Drive Hoist 1″ Shaft 4:1 Reduction #41

• Jack shaft mounting
• 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
• External chain, sprocket drive
• 3 1/2” offset needed from the center of the shaft for this unit