Upgrade your desk to this professional grade sit stand desk and get a workstation that fits perfectly, whether you are sitting or standing. Boost your productivity, workplace health, and whole day comfort by using an ergonomic desk that encourages movement and changing positions throughout the day. The powerful dual electric motors raise and lower your work surface with a fast and quiet lifting system. This model features three stage, height adjustable legs for a larger range of height adjustment than desks with only two stage legs., This is the updated version of the original Monoprice model 15722 dual motor desk frame. The upgrades include an increased weight capacity, greater height adjustment range, and a more intuitive control panel.