Turn any desk or table into a sit-to-stand workspace with Seville Classics airLIFT® PRO Pneumatic Desk Riser. The pneumatic lever allows for effortless adjusted from 4.9in to 16.9in high. The desktop measures 30.2in x 19.6in and is designed to support single monitor, dual monitor, and laptop plus monitor setups with ease. A built-in stand allows notepads, tablets and smartphones to be propped up for easy viewing. The detachable keyboard tray measuring 29.8in x 12.4in is designed to fit a keyboard with mouse. Assembly is simple, just attach the keyboard tray and you're ready to work.