1560 Commercial Grade Pocket Door Frame (36" x 80") HEAVY DUTY - 200 lb. capacity, for 2 x 6 interior wall construction. Minimum door thickness of 1". ALL INCLUSIVE - Includes ball bearing hangers for increased weight capacity, smoother operation, and longer life. PATENTED DESIGN - Jump proof precision extruded 100 series 'box' track. ADJUSTABLE - Frame can be cut down to fit any smaller door size. MADE IN U.S.A. - Built in the United States.