Trim out your space with Diamond Plate Aluminum Corner Guards. Used for years in commercial applications such as hospitals, airports, restaurants and others -- corner protection provides a professional solution to a nagging problem. Stunning metals make our moldings look like jewelry on the walls. Our 1" size is the most popular size. Our 3" size is perfect for heavy duty commercial applications and our 4" size is our largest and creates the ultimate showroom effect. For wall protection and decor.