National Artcraft's 5" x 7" picture frame back is a perfect replacement for frames up to 1" thick. It is made of sturdy 1/8" matte black cardboard. The leg is metal-hinged and folds flat against the back when not in use. Two metal hinged hooks are attached to the back allowing the frame to be mounted on a wall. The back allows the item to be displayed either vertically or horizontally, on a wall or surface.