Abstract: A modular storage cabinet for electronic components which includes at least one base having front back and opposite side walls. Each base side wall includes a coacting top and bottom fastener. A plurality of stackable side bars wherein each side bar includes an elongated wall portion having interior and exterior faces and coacting top and bottom fasteners on each wall portion. The bottom fasteners are adapted to engage with the top fasteners of a base or side bar for stackably supporting the side bar in registered relation thereon and the top fasteners being engagable with bottom fasteners of a base or side bar for stackably supporting the last mentioned base or sidebar thereon. Any selected number of side bars may be stacked on each of opposite side walls of a base for defining the spacing between adjacent stacked bases.