Adjustable Desk Riser Plus with retractable keyboard tray features an ergonomic stable, sturdy design to convert any desk or table into a Sit-To-Stand desk. With EVR Enhanced Vertical Range, it will raise your worksurface up to 18" and lowers it down to 5" to optimize the ergonomic work position for people of all heights. The large, 32" top panel surface can easily accommodate two monitors or laptops. Straight up and down motion minimizes required depth (23"). Grommet hole allows you to route cables or add an optional monitor desk mount. Riser comes fully assembled and ready to use.