Fellowes 9140303 Underdesk Keybrd Tray, 20-1/8"x7-3/4", BK/Silver Sold as 1 EA. Features 3 height adjustments to suit preferred work position. Mouse tray mounts to right or left side of keyboard tray or stows underneath. Product contains 100% recycled materials. Sturdy, impact-resistant tray fits standard keyboards.