L.E. Johnson's Series 200 sliding door hardware can hold sliding and pocket doors up to 300 lbs. and folding doors up to 125 lbs. The hardware features four-wheel ball bearing hangers and a machine with turned and balanced 1 in. nylon wheels on an aluminum I-beam track. The sliding and folding door system can accommodate track lengths up 16 ft. and doors as large as 4- by 9-ft.