National Hardware 4.5" x 1.5" x 1/8" Corner Plate is a heavy-duty corner brace designed to reinforce 90-degree angles by securing it to the side of the angle. This durable corner plate features slots for 5/16-inch carriage bolts and is finished with a black powder coat to enhance weather resistance, making it suitable for various indoor and outdoor applications. To ensure safety and optimal performance, it is important to consult with design professionals to verify that this product and the fasteners used are appropriate for your specific project. Model Number: N351-504