Feature Tips 1: Pre-drilled 16″ apart hole on the track to meet drywall studs 2: Different Wall Avaiable:Solid wall and soft wall 3: Large range thickness door panel avaiable, two spec roller bolts to suit for 1.375″ – 1.75 (35mm-45mm) thickness door panel 4: All necessary hardware is included as you see in the pictures, only not include door. FAQ Q: How long track do I need A: the track length need at least twice of the door panel width, a bit longer would be better Q: Can I cut the track myself A: yes, you can cut the track yourself to meet your need. Q: How to clearance the door frame A: Attach a wooden board with the same thickness as your frame into your studs first, and then mount the track onto the wooden board. ??????????????????? Solid steel, brushed nickel surface, anti-rust anti-corrosion ensures years of beauty and longevity. Slide Like Butter, Ball bearing roller slide smoothly and quietly, Tested Beyond 100,000 Rolls. All items have been multiple inspected before on market. ??????????????????????? Our hardware suitable for both modern and rustic style, you can apply for aisle, garage, kitchen, bedroom and so on. ??????????????? Fit Door Width up to 40”;Fit Door Thickness 1-3/8″1-3/4″;Door Weight Capacity 220lbs. Package Includes:(2)3.3ft Track, (5)Spacer, (2)Rollers, (2)Door Stops, (1)Floor Guide, (2)Anti Pad. DOOR NOT INCLUDED???????????????????????? We provide step-by-step graphic & text installation parsing manual, you can also get soft online copy and professional installation guide from our online service. ????????????????????????????? Specialize in sliding door and hardware many years, if there anything missed or broken, pls let us know, we are whole day online to solve your problem.