High Quality Plastic MaterialThe sliding door tracks are made of high quality plastic, which is thick, lightweight but very durable, impact resistant and never rust. You can adjust the sliding door track according to the actual situation to facilitate your use and meet your different needs. Reduce noisePractical design floor to ceiling sliding door tracks allow silent and easy sliding. You can rest assured that your barn door will slide extremely easily on our floor tracks and no noise will interfere with your life. Easy to InstallGirdle the door and tighten the screws. If there is no groove on the door, you only need to fix two screws on the bottom rod, and the door does not need to be grooved, which is very convenient and labor-saving . There are two methods of use for you to choose. Widely UsedThe design of this sliding door floor track is very simple and beautiful, with a modern style, suitable for most decoration styles , the sliding door track is suitable for both slotted and non-slotted doors, it can be fixed on the door in the middle of the door, or it can be fixed on the bottom with a slotted door, no slotted door is required. Material: Our door guides are made of plastic. Door guide size: 45x20x24mm. Screw Size: 4x18mm Wide application: Suitable for most types of barn doors and sliding doors. Easy to install: Adjust the gap between the door guides according to the thickness of the door, install with screws and expansion tubes. Package includes: 4 door guides, 8 screws and 8 expansion tubes. Color: Black Quantity sold: 4 pieces Good advice Different lighting and display may cause slight difference of color between the product and the actual product. Measurement tolerance is 1-3cm.