High Quality Plastic: Made of 100% premium plastic, has good impact resistance, is not easy to rust and is durable. The size is 45 * 25 mm, the surface is smooth, the bottom is stable, easy to use. For Doors of Any Thickness: The sliding door guide is adjustable and suitable for doors of any thickness, you don't have to worry about the thickness of the house doors. You can adjust the sliding door track according to the actual situation to facilitate your use and meet your different needs. Silent Slide: Practical floor rail design for quiet and easy sliding. You can be sure that your barn door will give you a super smooth sliding experience on our floor guide. Simple Modern Style: The sliding door guide rail adopts classic black, with modern style, exquisite workmanship, simple and elegant, suitable for most decoration styles, exquisite design fits perfectly with various door styles. Easy to Install: The sliding barn door track is suitable for doors with grooves and without grooves, and it can be fixed on the door in the middle of the door or on the door with grooves at the bottom, without having to groove the door. Package Included: 4 x Floor Guide Clip. 8 x Screws. Notice: Please allow 1-3cm error due to manual measurement and make sure you do not mind before ordering.becomeveryrich