Commercial grade top-hung pocket door hardware set for one door with bidirectional soft close operation. 96 in. I-beam track in mill finish 6063T6 extruded aluminum. For doors up to 48 in. wide (32 in. minimum for soft close) and up to 330 lbs, with a 1-1/8 in. minimum door thickness. Steel components are zinc trivalent plated, with nylon encapsulated sealed ball bearing wheels. For interior residential and commercial use. Made in the U.S.A.