The iStarUSA WN4210-EX Depth Rack-Mount Server Cabinet 42 U (1000mm) is built with high-quality aluminum/steel structures. With vented doors and cooling fans, it provides excellent air circulation for servers and other devices. The cabinet is completely lockable from the front/rear doors and side panels to prevent unauthorized access. This stylish and secure 19" (482.6mm) rack-mount cabinet protects your investment in computer equipment against environmental elements heat and dust. This cabinet offers a superior environment for mission-critical equipment is built with high-quality aluminum/steel structures. With vented doors and cooling fans, it provides excellent air circulation for servers and other devices.