Abstract: A mounting system for mounting a door for movement adjacent an opening in a wall structure includes a cleat having a central web and two sides, a track plate having a central web and two sides, a track attached to the track plate, and at least one fastener for attaching the cleat to the wall structure. When mounted, the cleat extends lengthwise above the opening and engages drywall, the at least one fastener extends through at least one aperture defined by the cleat web and engages at least one stud(s) and/or header of the wall structure, and the first side of the track plate engages the first side of the cleat. A related door mounting method includes mounting a cleat to the wall structure, hanging a track plate on the cleat, securing the track plate to the cleat, and hanging the door on the track plate.