Triple Monitor Arms Triple monitor arms carry three monitors at a time and allow for adjustability of each for proper ergonomic posture, resulting in more comfort, less risk, and improved productivity. Showing the single result ESI Evolve3 Triple Monitor Arm with Dynamic Height Adjustment Call 619-546-0872 Love it? Quote it. Triple monitor arms work great in crowded areas that require the use of multiple monitors. Monitor arms take monitors off the surface, clearing up vital workspace.