A [𝐇𝐈𝐆𝐇 𝐐𝐔𝐀𝐋𝐈𝐓𝐘]: This barn door floor guide is made of solid steel with powder-coated matte black finish, featuring in rust resistance and durability, much more practical than plastic and soft rubber. These barn door floor guides are well-tested by the manufacturer to support a longer service life. [𝐅𝐈𝐓 𝐃𝐎𝐎𝐑 𝐏𝐀𝐍𝐄𝐋 𝐓𝐇𝐈𝐂𝐊𝐍𝐄𝐒𝐒]: The barn door guide adjustable is fit for pre-grooved and non-grooved barn door, suitable for barn door thickness from 1" to 1-7/8". Note: If you barn door has thickness more than 1-7/8", you can make a groove for you barn door for better stability and hiding. [𝐅𝐔𝐍𝐂𝐓𝐈𝐎𝐍]: The barn door bottom floor guide adapts U-shape, flush flat bottom design (no need to drill your floor during installation), wall mount system. With this adjustable sliding barn door bottom floor guide, you can adjust it according to the width of barn door. [𝐖𝐈𝐃𝐄 𝐀𝐏𝐏𝐋𝐈𝐂𝐀𝐓𝐈𝐎𝐍]: This U-shaped door guide can be applied to the floor, wall, etc. The door floor guide can be used in barn door, cabinet, warehouse, kitchen, living room, bedroom, window, bathroom, and other places you' d like to install. [𝐄𝐀𝐒𝐘 𝐓𝐎 𝐈𝐍𝐒𝐓𝐀𝐋𝐋]: The barn door bottom floor guide comes with 4 pcs screws and 4 pcs anchors. The U-shaped door guide is fit for both pre-grooved and non-grooved door, both installations not only prevent your door from swing out, but also saves children, pets from getting injuried. [𝐏𝐀𝐂𝐊𝐀𝐆𝐄 𝐈𝐍𝐂𝐋𝐔𝐃𝐄𝐃]: You will receive adjustable U-shape barn door floor guides, 4 pcs screws and 4 pcs anchors. Any question on the product, please feel free to contact us, we will back to you at the soonest.