A modular system is capable of storing and displaying up to N compact disk cases or other types of similarly sized, cases having at least one slot on each of two spaced apart, parallel peripheral edges. A modular unit includes a frame supporting N pairs of spaced cantilevers projecting outward from a front side of the frame, N being at least one. Each of the N pairs of cantilevers includes a first cantilever and a second cantilever, each of the first cantilever and second cantilever having a stop surface facing the stop surface of the other and a tab projecting from the stop surface, wherein the first and second cantilever can cooperatively grip one of the cases when the tabs are inserted in the first slot and the second slot.