42U RACK ENCLOSURE CABINET. Tripp Lite's Smart Rack 42U value Series Standard-Depth Rack Enclosure Cabinet is designed for secure, high density server & networking applications in IT environments. Designed with provisions to integrate cooling, power distribution & cable management, Smart Rack enclosures make ideal homes for mission-critical equipment. Toolless mounting accessory slots allow quick installation of PDUs & vertical cable managers. Lightweight modular doors & side panels provide safe, convenient service access. Smart Rack enclosures support cooling, cable management, power distribution & monitoring features that keep critical servers & network equipment operating nonstop.