CCJH 18FT Single Sliding Barn Door Hardware Kit Black Basic Roller Carbon Steel Hanger Flat Track System for Closet Kitchen 1 Door 108 inch WideDoor Weight Capacity 330lb, 18FT single barn door hardware kit fits a 1 3 16" 2" thick and 108" wide door, The clearance above the top of the door needs min. 6", The gap between door and wall is 5 8" based on 1 9 16" thick door. Widely Application Main material is steel, sturdy and stable roller rail kit, the bearings run very quietly and smoothly, Passed 150,000 times opening and closing test by doors of meeting room, living room, bedroom, kitchen,