Star Tech.coms adjustable 12U, 4 post open frame rack cabinet provides a durable, open air housing for rackmount servers & networking equipment. The equipment rack/cabinet features heavy gauge mounting rails to ensure a stable installation platform & adjustable posts for flexible installation. The 12U open frame rack is compliant with EIA-RS-310C standards, offering a universal design thats compatible with equipment from popular manufacturers. Plus, the equipment rack is flat-packed, reducing shipping costs & simplifying handling & assembly.