I used the product to solve a problem. I am painting a very large scale canvas (6ft x 8 ft) and didn't have the ability in my art studio to manage the canvas with my existing easels. I decided to construct a wall easel to solve the problem. I knew I wanted the easel to be flexible for varying size canvases so I needed the verticals to be easily movable on the wall. My studio has sliding doors using barn door hardware so I decided to go with the same approach for my easel. I searched around and saw this product with a nice appearance, good reviews, and a great price. I ordered the product and, when I received it, I began by adding a header as suggested since I wanted the easel higher than my wall would allow. Once the header was in place, installation of the hardware went very quickly. Once installed and rolling well, I continued building and attaching the easel components. I love the result and so do my neighbor artists and my artist peers whom I've shared the images with. THANK YOU FOR AIDING IN REALIZING MY SOLUTION.