A grid-based framework of interconnected structural members used as the underlying support system for exhibit walls, ceilings, hanging elements, and integrated components. A structural matrix distributes loads evenly across the exhibit, provides consistent attachment points for panels, graphics, and hardware, and allows for modular reconfiguration of the exhibit layout between shows. Matrix systems are commonly built from aluminum extrusion, steel tubing, or engineered wood framing depending on the structural requirements of the design.