High Quality Materials: This bypass sliding door hardware is made of high-precision aluminum material, which is wear-resistant, rust proof, and corrosion-resistant. After testing, it can be used more than 150000 times. Max Door Weight: Track can be cut down to fit custom opening width.up to 150lbs (68kg) per panel; Door panel thickness: 1 3/8" and 1 3/4"; Min Door panel width: 42 1/2"x2doors.The 84 inch track is composed of two 42 inch tracks combined by connectors, which can achieve safe, perfect and smooth operation after connection during installation. It has been professionally tested. Flexible and Sturdy:Commercial grade precision extruded aluminum box track ensures door will not jump from track, convex rails on track allow flexible and free rolling. Built-in fascia hides the sliding hardware from view.When sliding, it is smooth and silent, without making annoying noises. Excellent Structure: Three wheel hangers ensure that all wheels can withstand the weight of the door, Quick release locking tab allows easy door installation/removal without dropping track. Service and Warranty: We provide 24-hour online professional service and a 6-year warranty. We provide professional installation instructions and feel free to contact us if you encounter any problems. bypass door hardware