High-quality plastic: Made of 100% premium plastic, has good impact resistance, is not easy to rust, and is durable. The size is 45*25mm, 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. thickness, you dont need 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. Quiet Slide: Convenient floor track 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 track adopts classic black, with a modern style, exquisite workmanship, simple and elegant, suitable for most decoration styles, exquisite design perfectly matches various styles of doors. Easy to install: The sliding door track barn 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. 4 Pcs Guide of Floor Sliding Door,REYOK Multifunctional Bottom Barn Door Adjustable Floor Guide, Plastic Sliding Barn Door with Screws and Expansion Tube Guide High Quality: Made from 100% high quality hard plastic for durability. It has good impact resistance and does not rust. Specification: Condition: 100% brand new. Color: black. Material: plastic. Area of use: sliding door. Size: (L) x (W) x (H) 45 x 20 x 23 cm / 17 .72 x 7.87 x 9.06 inches (approx). 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