Material: Commercial grade precision extruded aluminum box track ensures the door will not jump from track. The convex rails on track allow the door free rolling. The built-in fascia hides the sliding hardware from view. Smoothly and Quietly: The three wheel hangers guarantee all wheels carry door weight equally. And the heavy-duty ball bearing offer minimum friction and make the door rolling smoothly and quietly. Specification: Max Door Weight: 150lbs (68kg) per panel, Door panel thickness: 1 3/8" and 1 3/4", Min each door panel width: 36 1/2". Min overlap of the two doors: 1/2". The pocket door track can be cut down to fit the opening. Easy Installion: The closet door track is ceiling mount. Making sure the rollers slidding in their respective channels. Then attaching the clips to the top of the door. Popping the door clips into the rollers and screwing the floor guide to the floor. Widely Use: This closet door track can be used for any space, especially for low clearance, such as living room, kitchen, bedroom, bathroom, laundry room, storage room, closet, study, checkroom.