Abstract: A shelf box-type modular elements for stacking and presenting two-dimensional piece goods in a substantially vertical orientation, which elements can be introduced into a rack or frame. The modular elements are trays that are parallel-piped in at least their ends zones, with an angle (&agr;, &bgr;, &ggr;) smaller 90°, that remain open towards the top and that have a low-cut portion on the front wall. The front wall can also be transparent. A display consisting of a rack or frame includes at least one vertical compartment, open towards the front, and having trays introduced individually one on top of the other. The lateral walls and the intermediate walls of the vertical compartment(s) are provided with elements fro introducing and fixing the trays at an angle. The elements are arranged in such a manner that the front wall and the lateral walls of the trays extend in a substantially vertical orientation.