The versatile mouse-under Advantage Keyboard Tray System can be used in both straight and corner work center applications. The tray is constructed from durable ultra-thin phenolic and features a built-in document holder and cable management. The dual mouse surface design with Advantage Dual allows instant change from right to left handed mouse use. Advantage is available with our Pinnacle 2 value keyboard arm with nylon glide track in 17" or 22" lengths and comes with a lifetime warranty and will provide years of reliable, maintenance-free performance and reliability.