79 in. x 2.5 in. Black Metal Barn Door Sliding Door Hardware KitHang your barn door with our stylish, but easy to install heavy duty barn door hardware. Kit comes with all necessary hardware for hanging the door, including sliding track, 2 door stoppers, 4 wall hangers, 2 rollers, 1 floor guide, 2 anti jump disks, 4 M10 bolts, 4 M10 60 bolts for 40 45 mm doors, 1 set of accessories, instructions. Door weight capacity is up to 200lbs. 79 in. long for openings up to 40 in. recommend 1 3 8 in. thickness Track is in 2