garage doors
american garage door ch3501j1 garage door openerjack shaft mount g5718081
garage door opener manual chain hoist max . door height ft. 18 standards 1 in . bore includes jack shaft mounting 4 1 reduction sprocket 22 in . of 41 roller chain 26 ft. of hand chain 1 chain keeper 2 shaft collars 1 wall bracket 1 4 in . key external chain and sprocket drive br b features b ul li includes jack shaft mounting 4 1 reduction sprocket 22 of 41 roller chain 26 ft. of hand chain 1 chain keeper 2 shaft collars 1 wall bracket 1 4 key external chain and sprocket drive li li item garage door opener li li type manual chain hoist li li max . door height ft. 18 li li standards 1 bore li ul