Transform a tabletop work surface to a sit-stand workstation. Features larger keyboard tray, wider worksurface and higher weight capacity. Instantly move to sit or stand as you work: simply release hand-brake levers on either side of unit to position the surface higher or lower. No cranks or motors to engage: Counterbalancing mechanism uses CF™ technology to facilitate quick height adjustment. Works well in corner desk configurations and fits on surfaces as shallow as 19 in. (48 cm). Ships fully assembled. 5-year warranty. Sold by each.