Adjustable Floor Guide: It uses high-quality materials, the frame is made of corrosion-resistant carbon steel, black powder coating, makes it durable, the frosted appearance is more beautiful. The total weight of the floor guide is 0.33 pounds, it is suitable for 2.5 cm to 5 cm thick door. Unique Design: This kind of pulley stopper is lightweight and concealed, suitable for indoor and outdoor use, and can be perfectly matched with various styles of barn doors. Smooth Sliding: The rotating wheel perpendicular to the side not only makes the sliding smoother and quieter, but also saves more space. The flush bottom design will not damage your beautiful floor. Easy to Install: There is no need to reserve grooves on the door, nor to drill holes on the floor. You can adjust the position of the roller according to your door panel as you like.