Mounts to top, wall, or door header. Both sides are decorative. Also known as barn door tracks when side/wall mounted.The SD, HD, and XHD series are now available with a new low profile hardware kit that places the top of the door within 3/16″ (4mm) of the track. This feature makes the door and track and elegant clean look without the need for a fascia. Also new is the Hettich developed, optional “SiSy” Silent System for Grant door hardware which is available for the SD and HD series. The soft open, soft close feature will be dearly loved by your clients, who will no longer have banging doors.Box tracks have more mounting options than some other types of door tracks. They can mount to the ceiling, wall, or door header. Both sides are decorative. Also known as barn door tracks. Wall mount options require a separate wall mount bracket.