A rack-mountable system enclosure for limiting the escape of internally
generated electromagnetic interference includes a system case, a front
panel, a back panel, overlapped seams formed to couple the front panel and
the back panel to the system case such that no gaskets and a minimal
number of fasteners including welds, screws and rivets are required, at
least one front opening through which communication media passes and
apertures formed within the system case for providing air inlet and egress
ports.