It is a set of J shape soft-close barn door hardware, which works for 170lbs-180lbs doors. This set works for one door. This soft close system can only work with door weight between 170lbs-180lbs. Door weight not in the range will not function the soft close system<br> Advantage of soft close barn door hardware: To install a soft close system onto the rail, it can ensure the door closing and opening slowly. The door stopper is also needed to be installed on the rail to avoid the soft-close system invalid<br> Rail size: 6.6ft (length)* 1 9/16” (width) <br> Hanger size: 11 1/2 * 1 9/16”, wheel diameter: 2 3/4” <br> <br> Package include: <br> (1)79.2 inch Rail<br> (2)Roller<br> (5)Spacer <br> (2) Door stopper<br> (2) Anti-jump end<br> (1) Floor guide<br> (1) Soft close system<br> (1) Manual<br><br> The clearance from the top side of the door to the top edge of the cabinet should be at least 6” <br> Two sizes of roller screws are available for you to replace according to the thickness of the door panel. <br> If the instruction and any other parts are lost or broken during the shipping, please feel free to contact with us. <br> Only<strong> SmartStandard<strong> is the legal seller of this product. All product from other sellers are fake imitation and not under warranty policy. <br><br>