【High-Quality Plastic】: Made from 100% premium plastic, offering excellent impact resistance, rust-proof durability, and a long lifespan. Size: 45*25mm, with a smooth surface and stable base for easy use. 【For Doors of All Thicknesses】: This adjustable sliding door guide fits doors of any thickness. No need to worry about door thickness – simply adjust the guide to suit your needs and ensure smooth operation. 【Quiet Gliding】: Enjoy quiet and effortless sliding with our convenient bottom rail design. Rest assured your barn door will glide smoothly with our floor guide. 【Simple Modern Style】: The classic black sliding door guide features a modern style and exquisite workmanship, offering a simple and elegant look that complements most decor styles. Its refined design perfectly matches various door styles. 【Easy to Install】: This sliding door rail fits doors with or without grooves. It can be attached to the door in the middle or to a grooved door without needing to create grooves in the door itself. Includes 4 adjustable sliding barn door floor guides, REYOK multi-functional barn door floor guides, plastic rails with screws and expansion tubes. High Quality: Made of 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. Application: Sliding door. Size: 45 x 20 x 24 cm Package includes: 4 x floor guide clips. 8 * screws Note: Please allow 1-3 cm error due to manual measurement and make sure you don't mind before ordering.