PREMIUM FIRST 2PK G14 Adjustable Sliding Barn Door Bottom Roller Guides are high-quality and durable accessories designed to enhance the functionality of sliding barn doors. They are suitable for various interior and exterior doors, such as bedrooms, wardrobes, living rooms, pantries, garages, etc. Here are the key features: , Suitable for door thickness ranging from (16mm-45mm), providing versatility in door compatibility. They offer a compact and efficient design. The roller diameter measures 38.5mm ensuring smooth and seamless sliding motion. Constructed with a Carbon steel frame and high-quality nylon rollers, guarantees durability and longevity. The presence of nylon rollers on both sides prevents scratches on the door and ensures quiet operation. Featuring an invisible rotating wheel on the back, it optimizes space utilization and reduces the gap between the door and the wall. Installation is hassle-free, and it can be wall-mounted without drilling holes in the floor, making installation quick and easy. The package includes 2 floor guides, 4 screws, and 4 plastic plugs with a L shaped Allen Key . Adjustable wall mounted floor rails can be adjusted according to the thickness of your door, and the rear wheels can save more space for your door. The product is made of carbon steel body and has heavy-duty construction. The product is adjustable using the attached L-shaped Allen key .