Description: Promotes proper ergonomic positioning and inspires an on demand sit-stand work routine. Easily and simultaneously lift LCD screens to proper height for unsurpassed ergonomic comfort. Ergonomic back-tilt keyboard tray with left or right mouse tray ensures wrists remain in a neutral position during data entry, helping you avoid repetitive-stress injuries while increasing comfort and productivity. The unit offers base height adjustment and individual display adjustment. Counterbalanced adjustment points allow instantaneous, tool-free re-positioning while you work. Modify existing office spaces or cubes by simply clamping a WorkFit-S on an existing worksurface, without the cost of expensive professional installers. Clamps onto existing worksurface 2/5" to 2 2/5" thick.