The RatiopacPRO is a new series of space saving multi-functional system cases featuring integral EMC shielding. users can select either space-optimized units (3U, 4U, or 6U) or units with integral ventilation (4U, 5U, or 7U). Internal framework consists of extruded aluminum rails mounted between aluminum side panels and support brackets. Three different side panel designs are available. Basic units provide EMC attenuation of greater than 25 dB at 1 GHz, with increased EMC shielding available if required.