With a total width of just 19" but a depth of over 12.5", the Diagonal Keyboard Tray from Humanscale is designed to fit in angled corners that are tighter than average. The 15.5" long rear edge angles outward at 45ยบ to get to the full 19" width. The rigid phenolic tray features foam rubber keyboard gripper strips to ensure the keyboard is securely positioned. The tray is also capable of accepting the optional palm support. This keyboard tray can be equipped with an optional swing-out mousing surface to accomodate a traditional mouse but is also deep enough for a central pointing device such as a RollerMouse or Mousetrapper.