Abstract: A display device for displaying articles of merchandise, such as books and posters, is provided. The display device has four rectangular support structures. Each support structures includes a base, a first side wall, a second side wall, a first door hinged to the first side wall, a second door hinged to the second side wall, a back wall, and a cover hinged to the back wall. Each side wall is hinged to a side wall of an adjoining one of the support structures. At least one wheel is connected to the base of each support structure. The display device is movable between an open position wherein the back walls of the support structures define an enclosed space and a closed position wherein the back walls of each support structure faces the back wall of an adjoining one of the support structures.