Max Door Weight: up to 220lbs (100kg) per panel; Door panel thickness: 1” to 1-3/4”; Door panel width: 24”-36”, track can be cut down to fit custom opening width. Commercial grade precision extruded aluminum box track ensures door will not jump from track, convex rails on track allow flexible and free rolling. Three wheel hangers guarantee all wheels carry door weight equally, with heavy-duty ball-bearing offer minimum friction and smooth, quiet rolling. Quick release locking tab allows easy door installation/removal without dropping track. We are reliable and qualified manufacture. Professional customer service team help you solve all problems in time.