National Hardware Galvanized Up to 3-3/4" Steel Barn Door Stay Roller is designed as a heavy-duty guide for large sliding doors up to 3-3/4 inches thick. Its frame features slots that allow for easy adjustment to hold doors securely against wood walls or posts. The reversible wheel can be used on either side of the sturdy steel frame, providing versatile installation options. This adjustable roller includes pre-drilled nail and lag screw holes for convenient mounting. Finished with zinc plating and WeatherGuard protection, it durability and resistance to the elements, making it i for outdoor use. Model Number: N131-490