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. This TAA compliant product adheres to the requirements of the US Federal Trade Agreements Act (TAA), allowing government GSA Schedule purchases. 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. Backed by a StarTech.com Lifetime warranty and free lifetime technical support.