How do I replace a broken hinge or roller on my garage door? Hinge #4 replaces hinge between 4th and 5th 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 #4 Hinge is for use with residential sectional garage doors Should have #4 printed on the existing hinge Used by most garage door manufacturers