Abstract: A storage container is disclosed for items, such as tabulating cards, magnetic cards, magentic tape cassettes as well as smaller items. The container comprises an integrally formed tray to which container side panels are attached. Each of the side panels is larger than the side walls of the tray and contain a channel along the periphery for receiving a sliding closure means therein for closing the container. A second removable tray of substantially identical outer proportions as the first tray can be placed within the container above the first tray and can be seated on horizontal flanges integrally formed with the side panels. The flanges additionally impart structural rigidity to the container and have a number of notches for receiving members that divide the lower tray portion into compartments. The closure member has spaced transverse ribs bonded to a flexible fabriclike substrate.