JUBEST 8 FT Brushed Nickel Sliding Barn Door Hardware Kit Smoothly and Quietly Hanger Roller Flat Track Kit, J Shape Roller Heavy Duty Nickle Barn Door Track, Easy to Install. SUPERIOR QUALITY: We specialized in sliding door and hardware for many years. Our barn door hardware is made of high quality carbon steel with nickel-plated surface. There is no need to worry about quality. You get what you pay for. DOOR WEIGHT CAPACITY:270 lb, Fit Door Panel Approx Width: 48″, door thick 1 3/8″ to 1 3/4. The track kit fits Wall Stud and Concrete Wall. All nylon wheels have been tested beyond 100,000 rolls. PACKAGE INCLUDED: 2x 4FT Rails(Easy to connect and install as a complete 4ft rail), 5x Rail Spacers, 2x Rollers, 2x Door Stops, 1x Floor Guide, 1x Hex Key; All other necessary hardware is included as you see in the pictures. VERY DETAILED INSTALLATION STEPS:We provide step-by-step graphic and text instruction. All measurements in inch. It is very easy for you to take a reference during the installation. SUPPORT: We are the manufacture of barn door hardware. We have a professional engineer team. We will try out best to serve you. Please wait for the result of cancellation. The order will be processed and completed by automatic warehouse system within 5 minutes. Sending direct message to cancel the order is not allowed for every case. For the return case.