Abstract: A shelving unit made of vertical end panels, horizontal shelves, cornice boards and toekicks secured together in a rigid and accurate assembly of parts. The shelf at the midpoint in the height of the end panels is connected to the end panels by shelf support locking pins which restrict the end panels from flexing in or out. Locking pin brackets have locking pins to pull the cornice and toekick tight with respect to the end panels, providing a strong and accurate connection between the parts.