Ships unassembled for easy transport and assembly in confined spaces. Perforated doors provide massive front-to-rear ventilation capacity, meeting or exceeding server manual requirements. Locking, removable, reversible doors and side panels provide the perfect combination of security with safe and easy access to components. Toolless accessory mounting rails (two per enclosure) include slots for quick installation of compatible PDUs, cable managers, and other accessories. Convenient grounding system features multiple connections to ground and quick-release ground wires for front and rear doors. An open bottom and generously-sized access holes on the top panel make it easy to bring in all necessary cables. Component Type: Enclosure; Component Style: Knock Down; Unit # (Capacity): 42U.