Highly adjustable monitor arm allows you to free up space on your desk and set two monitors at the best ergonomic position with just a touch. Easy-Adjust Dual Monitor Arm moves up, down, forward and back. Each arm provides 21" of height adjustability, extends 25-1/2" from the base and allows the monitor to rotate from landscape to portrait orientation. Clamp mount hardware fits desks up to 2-5/8" thick, and grommet mount hardware fits desks up to 3" thick. Weight capacity is 20 lb. per arm. Monitor arm is VESA MIS-D Compliant.