StarTech.com's DuraRak 25U 4 Post Open Frame Rack/Cabinet provides a durable, open air housing for rackmount servers and networking equipment.The equipment rack/cabinet features heavy gauge mounting rails to ensure a stable installation platform and adjustable posts for flexible installation.The 25U rack is compliant with EIA-RS-310C standards, offering a universal design that's compatible with equipment from popular manufacturers. Plus, the equipment rack is flat-packed, reducing shipping costs and simplifying handling and assembly.For even more versatility, StarTech.com offers an optional 4pc Caster Kit (4POSTCASTER) that can be installed on the bottom of the 25U server rack, making it easier to re-position the cabinet/rack as needed for future uses.The DuraRak 25U 4-Post Open Racks offer a durable housing for valuable equipment, backed by Lifetime Warranty.