This is an 83” BEST medium duty cross brace that you can install on your large canvases to add more stability to them. They are important to install when you plan on hanging your canvases or when they are going to be displayed for a long period of time. They are also important to install when you have a large canvas size. Comes with a set of cross brace brackets. Easy to assembly no matter what your background is. They are pre-notched so that you can add a second cross brace without much effort. Built from sustainable pine, these cross braces will make your artwork look great throughout the years.