This 14-gauge top bracket goes at the top corners of the door and holds the top roller in place. it is different from numbered hinges because it is not between sections. Instead, it sits at the very top edge of the top panel. A worn out or bent top bracket usually shows up as the door rubbing the header or not sealing right at the top. This one's adjustable, so you can dial in the fit against the weatherstrip. it is a Rapid Flex style, so match it to your existing bracket's bolt pattern before ordering.