Abstract: An inexpensive, strong, fully recyclable and easy to assemble display shelf assembly made from folded blanks of corrugated liner board, includes a support housing having a back panel with side panels extending forwardly from opposite edges thereof. Each side panel has an inner wall and a spaced, parallel outer wall connected by narrow panels at their opposite edges, defining box-like structures. A plurality of slots are formed in the opposite, confronting inner walls, and a plurality of shelf units have their opposite ends received in respective slots to support the shelf units on the support housing. Each shelf unit is made from folded blanks of corrugated liner board so that a substantially unbroken top surface is provided, with box beam structures beneath and supporting the top surface.