Ergotron WorkFit 45-405-026 flat panel desk mount

Sit-Stand Desk Mount System The modular and flexible design of the WorkFit-LX fits most any space while providing personalized ergonomic positioning. This stand-up desk system enables complete control of focal distance and the position of the keyboard relative to the monitor screen.
The LX offers unparalleled range of motion, easily accommodating a user’s sitting or standing posture. Features include 20 inches (51 cm) of height adjustment and 62 inches (157 cm) of side-to-side movement.