The VADRB Height Adjustable Sit to Standing Desk Riser and Converter offers the versatility you need to get through your work day. Now you can sit part of the day or stand to take advantage of all the health benefits that come with standing and moving around. With the VADRB, you and your associates will become healthier and more productive. It fits over your current desk with no need to buy additional furniture. With its spacious 31.5 W x 16.4" D work surface, you can hold up to 2 large monitors, a laptop, and more. It also includes an extra large keyboard tray that measures 30" W x 10" D that is an ergonomic 4" below the desktop. EVR Enhanced Vertical Range rises up to 19.7" and down to 4.3", to optimize the ergonomic work position for people of all heights. Straight up and down motion minimizes required depth (17"). Gas piston assist allows you to easily raise and lower up to 30lbs. Grommet hole allows you to route cables or add an optional single or dual monitor arm such as the Rocelco DM1 or DM2. Fully assembled and ready to go! Our product comes with a MANUFACTURER LIMITED 1 YEAR WARRANTY as well as a customer service and tech support team that is always ready to help. The VADRB Height Adjustable Sit to Standing Desk Riser and Converter offers the versatility you need to get through your work day. It fits over your current desk with no need to buy additional furniture.