The 4POSTRACK12A Open Frame Rack offers a durable, yet flexible open-air housing for rack-mount servers and networking equipment. The rack/cabinet features heavy gauge mounting rails to ensure a stable installation platform with two adjustable posts for variable mounting depths.Providing a universal design that's compatible with equipment from popular manufacturers, this EIA-RS-310C compliant open rack ships flat packed, reducing shipping costs and simplifying handling and assembly.For even more versatility, this 12U rack ships with 4 swiveling casters and has a total height of less than 26" (661mm) which allows the rack to be rolled under most desks or work benches with little effort.