Sliding Door Floor Guide: Smooth-rolling bearings allow the door to slide smoothly and quietly, ensuring resistance-free opening and closing. The top and bottom of the floor tracks are flat and smooth to prevent damage to the floor and door. Material: Our sliding door floor guide tracks are made of carbon steel. The black coating not only looks beautiful and elegant, but also has good wear resistance and corrosion resistance and is durable. Easy to Install: This sliding door system is designed with 8 different installation methods, suitable for all types of barn doors. Simply mount it to the wall with screws, no groove required for the door. Adjustable Roller: Suitable for door panels with a thickness of 30 mm to 84 mm. The distance between the two wheels can be freely adjusted to meet your needs. Suitable for most sliding doors. Such as floor tracks, wooden sliding doors, bottom sliding door tracks, etc. About Size: The size of our sliding door floor track is 122 x 50 x 64 mm. The packages also come with the necessary parts and wrenches to make your installation more efficient.