Fellowes Office Suites Underdesk Keyboard Drawer, Black/Silver (9140303) Height adjustable unit features 3 height adjustments to suit preferred work position and moves keyboard and mouse off the desktop to save workspace Mouse tray mounts to right or left side of keyboard tray or stows underneath Sturdy, impact-resistant tray fits standard keyboards 23.5 wide space required for installation Product contains 100% recycled materials