Network cabinet depth varies from 0 to 50 inches, with 24 inches and 48 inches being most common. Wall-mounted racks can be shallower to save space. Options include 24″, 36″, 42″, 48″, and 59″. Plan for power density and cooling—modern setups can exceed 8kW per rack. While server racks and cabinets are generally at least 36 inches in depth, network racks and cabinets can be smaller than 31 inches deep. A minimum of 150 square inches (968 square cm) of open area at the floor air intake of the cabinet. The lowest piece of equipment should be installed a minimum of 1. Airflow, cable space, and power distribution units (PDUs) all come into consideration when determining how deep you should design your server rack. Most IT environments default to 42U, 19-inch width, and 1000–1200 mm depth unless space constraints or special equipment dictate. Ascertaining the depth of the network cabinet is not also an easy-going work in view of the fact that there will be many components you must put in place.
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