Made of high-quality steel, solid and well-made, with good rust and corrosion resistant.. The hardware can be used for one 84" wide door, suitable for 1 3/8"- 1 3/4" thick doors such as barn doors, closet doors, garage doors, garden sheds, wine cellars, etc.. High density plastic wheels provide ultra-quiet experience, door stoppers keep the exact sliding range and the strong floor guide stabilizes door movement.. Need a minimum of 6" clearance from the top of your door to the ceilingfor this kit to fit correctly.. A balanced and smooth track makes it easy for the wheels to roll, and anti jump pads are used to prevent the door from jumping off the track.. Sturdy and durable construction, smooth, silent and effortless operation.. The very detailed instruction explains every step with words and pictures which is very easy for you to take a reference during the installation.. Designed with a minimalist aesthetic, the door hardware is refined and unpretentious.. WINSOON 168-in Matte Black Indoor Arrow Barn Door Hardware Kit | GCM3747