ADJUSTABLE WITH 8 DIFFERENT CONFIGURATION OPTIONS: Fully adjustable for doors up to 76.2mm thick. With 8 different configuration options, assemble the floor guide into a style that suits your sliding barn door. By following the instructions to install the guide, you think it looks better and works well on your doors. Flat on the Floor and Recessed with Bracket: With a special design, this barn door guide allows the bottom bracket to land completely on the ground. The wall screws will line up with the bracket to protect the barn door from scratches. Strong and durable: The bracket is constructed from heavy-duty quality steel to ensure indoor and outdoor use. outside. The big wheel is made from durable plastic which can roll quietly and smoothly to avoid scratching your door. bolts.