Garage Door Top Roller Bracket. Adjustable residential top bracket made in the USA out of galvanized steel. For use on the top inside corners, right and left sides, of the top section of any type residential overhead garage door. This bracket moves the top section either forward or back to align the top section to fit tight against the door jam. Takes a standard 2" or 3" roller.Compatible with: All residential overhead garage doors. Specifications: 3 1/2" long, 2 1/2" wide, 2 1/4" height.