High Quality? SMARTSTANDARD sliding barn door hardware is made of durable solid carbon steel with fine black powder coated surface, ensuring anti-corrosion and long-lasting beauty. Each track section is firmly connected, the bearing roller slides smoothly and quietly, creating a peaceful and quiet living space. Excellent Industrial Design? The superior quality bearing has been passed the test of opening and closing for 100,000 times to ensure the stability and fluency of the move. A classic barn door not only saves space, it also allows the ability to open up multiple rooms without the annoyance of a swinging door. Hardware Dimensions? Door weight capacity: 220 lb; Fit door panel width: 24; Fit door panel thickness: 1 3/8” to 1 3/4”. The sliding double barn door hardware is suitable for both modern and rustic style, you can apply for aisle, garage, kitchen, bedroom and more. Easy to Install? Detailed installation manual included. Professional instruction and customer service team help you solve all installation problems in time. If there is any part missed or defectived, please let us know, we will promptly provide a replacement. Package Includes? Each kit comes with all necessary hardware as you see in the pictures, including 4.0FT Rail2, Rail Spacer6, Roller4, Door Stopper4, Anti-jump Block4, Floor Guide2, Connector1, Hex Key1, Screws and Bolts. Suitable for 16 inch stud. TRACK AND HARDWARE ONLY, DOOR NOT INCLUDED.