The amount of space you’ll need depends on how you position your screen(s). For the standard Jarvis Monitor Arm, we recommend leaving 8 to 10 centimetres of space behind the desk to utilise the arm’s full range of motion.
This Dual Jarvis Monitor Arm needs at least 7 inches of space in order to bring the monitors close together over the desktop surface.If your desk is up against a wall, we suggest the Fully Pole Mounted Monitor Arm. Once you set the median eye-level height for both sitting and standing, you'll only need to adjust the monitors forward or away from the front edge of the desk.