42U enclosure includes doors and no side panels. It is designed for secure, high density server and networking applications in IT environments. It is designed with provisions to integrate cooling, power distribution and cable management, SmartRack enclosures make ideal homes for mission-critical equipment. It is compatible with all standard 19-inch rack equipment. Adjustable mounting rails include an easy-view depth index to eliminate time-consuming measurements. Lightweight modular doors and side panels provide safe, convenient service access.