A display or storage unit used to hold compact or laser disc cases, video or audio tapes or cassettes, or the like. The unit may be made from a number or modular units attached to each other. Each modular unit has a number of openings used to hold cases, tapes or cassettes. The openings may be angled to facilitate holding the cases, tapes, or cassettes in place. Apertures are provided in side portions, back portions, and top or bottom plates of the modular units, which allow the modular units to be attached to each other in order to build different configurations for the display or storage unit, or to be hung on a supporting structure such as a wall. Upright units formed by the modular units may be mounted on bases using bolts to fasten bottom plates of the units to the bases.