With the Height Adjustable Corner Sit to Standing Desk Riser you can enjoy the benefits of a standing desk with the space saving design of a corner desk. You can sit and stand part of the day to take advantage of all the health benefits that come with standing and moving around. With the desk converter, you will become healthier and more productive. It sits directly on your current desk with no need to buy additional furniture. The desk riser features a spacious 45.5" wide x 23.25" deep work surface that is designed for corner desks and can hold 2 large monitors or a laptop. It also includes an extendable ergonomic keyboard tray that measures 40" wide x 13" deep and keeps the monitor at the proper height to prevent neck strain. The corner riser provides continuous height adjustments up to 18" and down to 5" above desktop to optimize the ergonomic work position for people of all heights. Gas piston assist allows you to easily raise and lower up to 40lbs with convenient side handles. Grommet included for mounting a single or dual monitor arm, or for running cables. All you need to do is attach the keyboard tray, place the riser on your existing desk, and you're ready to go. . The included Rocelco - Premium Double monitor Arm with (Gas Piston Counterbalance Motion Assist) allows effortless independent screen adjustment for comfortable viewing. Fits two 13"-27" screens up to 14.3 lbs each. Includes USB and multimedia ports to conveniently connect and charge your devices.