A modular worktable assembly and a shelving unit are described. The modular worktable assembly has a pair of side panels with a tabletop secured over a top end thereof. A rear, hollow cross-channel is secured between rear vertical end posts of the side panels and has an open top end with a removable cover member for access to an interior thereof. The table platform is held horizontal and elevated above the top edge of the side panels and flush with a top end of the rear hollow cross-channel. The modular shelving unit is characterized in that it has vertical side panels which are formed by a pair of symmetrical side walls immovably secured back-to-back and these side walls each have a pair of outwardly projecting elongated formations formed in a front and rear portion thereof. A plurality of horizontally aligned connecting slots are provided in these formations. The slots in the front portion of the side walls have opposed cavities formed in a. top and bottom edge of at least some of the slots for supporting a shelf at an angle between the vertical side panels and permitting one of the side walls of the side panels to be inverted whereby the cavities of interconnected side walls are disposed in aligned relationship.
