Ergotron 33-349-200 WorkFit-S Dual with Worksurface+ Promotes proper ergonomic positioning and inspires an on demand sit-stand work routine. Easily and simultaneously lifts keyboard and LCD screens to proper height. Ergonomic back-tilt keyboard tray. Patented constant force lift technology provides fluid, one-touch adjustments of the keyboard and monitor positions for personalized computing. Fold keyboard up and swing arm and monitors out of the way when you need your desk surface. Included work surface provides ample space and quick access to a tablet computer, phone, cup of Java or task-related items. Patented Constant Force lift technology provides fluid, one-touch adjustments of the keyboard and monitor positions for personalized computing. Fold keyboard up and swing arm and monitors out of the way when you need your desk surface. Included work surface provides ample space and quick access to a tablet computer, phone, cup of java or task-related items.