The unique Flex Design of the DS-319STA makes this the best Triple Arm Mounting Solution for your large screen LCD Monitors. DoubleSight's Flex Design offers the user complete flexibility when adjusting their monitors on the desktop. Each Monitor adjusts independently of the other Monitor for Height, Tilt, Swivel and Pivot for a truly custom view. In addition to height, users can also move monitors forward or backward on the stand for a better ergonomic fit. The Height adjustment is for the main pole only.