Features: 1. Our floor door guides are fully adjustable and compatible with sliding doors, ensuring your stable barn door operates smoothly for years to come. 2. Moves the door smoothly and quietly. This is an improved sliding door floor guide. It's adjustable and fits door panels from 30mm to 84mm. With this pin, you don't need to drill holes in the floor or cut a groove in the bottom of the door, making sliding door installation much easier. 3. This floor guide installation stabilizes the door, preventing it from moving away from the wall. Therefore, you never have to worry about the door or roller guides when the screws loosen. 4. Simply roll up the guide on the floor, ensuring there's enough space for the door and the film inside, then tighten the screws at the bottom of the guide. Material: Carbon steel. Color: Black. Adjustment Instructions: 1. There must be a 0.95 gap between the floor and the bottom of the door. 2. The guide should be fully aligned with the floor (if needed). 3. If it touches the wood floor, consider using a felt pad.