Reach new heights of productivity with the Ergotron LX Dual Stacking Arm with Tall Pole (45-509-216). Finished in a stunning brilliant white, this model features an extra-long 13-inch (34 cm) pole, providing the vertical clearance needed to stack two large monitors one above the other or position them side-by-side. It is the ultimate solution for power users, traders, and developers who need expansive screen real estate without sacrificing desk space. Built with patented Constant Force™ technology, each arm moves independently with fingertip effort. The tall pole design is especially beneficial for taller users or sit-stand workstations, ensuring your top screen is always at an ergonomic eye level. This durable, polished white arm supports monitors up to 40 inches (when used side-by-side) and is built to last through 10,000 motion cycles, offering a high-end aesthetic for the modern professional office.