Plan Your Layout: Measure the space where you want to build the network closet. Sketch a layout including shelves, racks, and cable management. A home network wiring cabinet, also known as a network rack or cabinet, is a dedicated space where you can install and organize all your networking equipment, such as routers, switches, modems, and other devices. Unlike massive server racks found in data centers, these smaller versions typically measure between 6U to 12U in height (roughly 10-24 inches tall). Additionally. If you're building a house, adding a little network room or a structured media enclosure is one of the smartest decisions you can make.