Masonite interior doors can now be hung using their Surface Mounted Hardware System. Featuring a tubular aluminum track and ball bearing rollers, the track accommodates 1- to 3/8-in. single and double doors weighing up to 300 pounds. The system fits openings of 48-, 60-, 72- or 96-in. and can be trimmed to fit smaller openings. The system includes an I-beam track, adjustable rollers, brackets, track stops, door guides and assembly tools.