Deluxe, adjustable desk riser offers a healthy addition to any desk, allowing you to sit or stand while you work. Large, 37.5 wide x 20.5 deep worksurface accommodates two monitors or a monitor and laptop. Retractable keyboard tray moves up and down with the desk for the most comfortable position. Desk riser provides five height adjustments up to 16.5 above your desk. Easily raise or lower the riser with the side handles. Gas shocks will allow you to easily move the desk up and down. Grommet hole allows you to route cables or add an optional monitor mount. Four AC outlets and two USB charging ports allow you to keep all your devices conveniently accessible. Riser is fully assembled for use right out of the box.