[Floor-Mount Recessed]: Our barn door roller guide is specially designed to allow the roller to sit perfectly flat on the floor without scratching from screws/bolts/nuts, resulting in greater stability and a more attractive appearance. No groove is needed for the door, and no drilling into the floor is required, making it perfect for carpet or tile. Quick and Easy Installation and Adjustment: The sliding door guide with two screws allows for easy and effortless mounting by anyone. Simply adjust and tighten the screw at the bottom to secure the 3 wheels in the position that feels most comfortable. Sturdy and Reliable: The heavy-duty, solid steel base with a black powder-coated finish complements any decorating style, providing visual appeal for years to come; The high-precision POM roller leaves no marks for a smooth and silent sliding door without wobbling. Universal safety guide: The sliding gate guides are rustproof and durable, suitable for all types of interior and exterior doors,