This new Country Black Steel Sliding Barn Wood Door Hardware can transform your doorway into a side sliding entry. This is a popular new way to bring innovation into the home and close off bedroom and side room in a stunningly unique way. Hole spacer of the rail is 16. It is good for the wall stub. Detailed instruction: use both words and pictures to display the steps of installing the barn door hardware. All the measurements are in inch rather than in centimeter. All our products have Logo on the package. [Double Barn Door Hardware Kit]: Barn door track is made of high quality carbon steel material, the solid internal structure is more sturdy and durable, preventing deformation and bending. The nylon roller has undergone 100,000 tests and slides smoothly and quietly. [Package Included]: A Barn Door Kit 2x 5.0FT Rails, 8x Rail Spacers, 4x Rollers, 4x Door Stops, 4x End Caps, 2x Floor Guides, 1xRail Connector; Pre-drilled hole spacer is 16 for American wall stud. Can be installed on both wooden wall and concrete wall. Works for double doors. All other necessary hardware is included as you see in the pictures. [Door Weight Capacity]: 150lb-220lb, Fit per door panel width: 30″, Door panel thickness: 1 3/8″ and 1 3/4. It can be paired with wood barn door, glass barn door, MDF barn doors, and more. [Easy to Install]: Professional instruction and customer service team help you solve all installation problems in time. Save the cost of finding a carpenter or decoration team. [Right Choice for Your House]: This modern twist on the classic barn door not only saves space, it allows the ability to open up multiple rooms without the annoyance. Suitable for living rooms, kitchens, bedrooms, storage rooms, bathrooms, and study rooms.