THE STARTECH.COM ADVANTAGE: StarTech.com offers a lifetime warranty and free lifetime technical support on this 1U shelf, and has been the choice of IT professionals and businesses for over 30 years. UNIVERSAL 19'' FIT: Add a sliding shelf to any 19in server rack or cabinet for easy peripheral and equipment access. This pull out tray can function as a sliding shelf, or a 1U drawer when inverted. HEAVY-DUTY & DURABLE DESIGN: Constructed with solid steel, the sturdy IT-grade pull out keyboard tray ensures long term durability and supports a total weight load of 55 lb / 25 kg. VERSATILE FUNCTIONALITY: This 22in deep slide out tray can switch from a sliding shelf to a sliding drawer. Its ideal for adding additional sliding storage space for your IT or AV accessories. COMPACT DESIGN: The 1U server rack shelf features a compact form factor, making it ideal non-rackmount equipment, tools and peripherals in your home, studio or office space.