The floor guide adopts premium carbon steel material, which is tough, durable, safe and eco-friendly. This floor guide ensures high level performance for your door barn door guide and prevents the door from swinging sideways. This guide mounts on the wall behind the door and out of sight, giving your sliding door a clean look. Easy to install, no drill required, it won't ruin your floor. This floor track is designed for sliding barn doors to prevent the door from swinging sideways. It mounts on the wall behind the door and does not require drilling holes in the floor. Features: The floor rails are made of high quality carbon steel, sturdy and durable. This floor track ensures a high level of performance for your sliding barn door and prevents the door from swinging sideways. For sliding barn doors 1 to 1-3/8 inches thick. This track attaches to the wall behind the door and is out of sight, giving your sliding door a neater look. Easy to install, no drilling required and no damage to the floor.