Premium Material: The barn door guide is made of high quality POM, which is durable, high temperature resistant and corrosion resistant, and can be used for a long time. Beach SizeThe adjustable sliding door is suitable for door width from 30mm to 42mm. Easy to use: This sliding door slides easily and opens the door without difficulty. The floor rails are flat at the bottom and do not damage the door or the floor and slide easily and quietly. Easy to installNo groove needed for the door, just fix two screws in the bottom bar, then pull the roller guide stays in place. Aesthetically attractiveThe guide wheel is suitable for automatic doors, sliding doors, barn doors, wooden doors and metal doors. The silver design matches most decor styles and is both beautiful and practical. Note: The data is all manual measurement, please allow some 1 - 3cm error, due to the difference in light and display, there will be a certain color difference, depending on the physical object received.