Ergotron Interactive Arm HD - Mounting kit (articulating arm, VESA adapter, wall mount bracket) - Patented Constant Force Technology - for LCD display - aluminum - black trim, polished aluminum - screen size: 30"-55"

Lift, swing or turn your display in any direction! It features 20-inch of vertical adjustment and 17.5-inch motion adjustment to either side. Now anyone can effortlessly move their TV into multiple positions with only a light touch. Your screen will seemingly float on air, being easily adjusted between standing and seated heights. No more awkward viewing angles and sore necks.