Split rear doors improve access and serviceability to the rear of rack mounted equipment. The split rear doors help to maximize floor space. Only 11 inches (279 mm) of clearance is required behind the enclosures to allow for door swing. Enclosures include pre-installed joining hardware to join enclosures in a row and provide additional stability. The pre-installed joining hardware includes holes for joining to an adjacent enclosure at 600 mm centers or 24 in centers, depending upon the floor layout. Enclosures are shipped standard with both leveling feet and castors. Leveling feet can be quickly adjusted using a screwdriver or drill, eliminating the need to reach underneath with a wrench. Enclosures with shock packaging are standard enclosures with provisions in the packaging design and enclosure assembly for shipping with equipment mounted inside.