Designed to carry heavy solid core doors (up to 400lbs each) in standard 2 x 4 timber or steel framed stud walls. Versatile frame and can be adapted for use in non standard wall thicknesses, block masonry walls and can be cut down to accept any smaller size door size. Aluminum extrusion track, mill grade finish. 12-14 gauge steel components, zinc trivalent plated. Nylon wheels encapsulated sealed ball bearing. Header assembly: (1) 200 track length, (1) 511588 passage end jambracket, (1) 512086 pocket end jamb bracket. (4) galvanized steel wrapped split studs, (2) 2020 ball bearing door hanger, (2) 511590 1-3/8 door floor brackets, (2) 511593 1-3/4 door floor brackets, (4) 1-3/4 door split studs shims, (1) 1550 pocket door guide, (1) 1513 door stop and hardware mounting screws.