How do I replace a broken hinge or roller on my garage door? Hinge #3 replaces hinge between 3rd and 4th sections on left & right side of door Width: 3″ overall & Height: 7 3/8″ high 18 Gauge Galvanized Steel Roller tube accepts a standard 7/16″ outer diameter stem roller This #3 Hinge is for use with residential sectional garage doors Should have #3 printed on the existing hinge Used by most garage door manufacturers