Qomo QBB400-90 BalanceBox Height-Adjustable Wall Mount Kit for 75" DisplaysThe QBB400 90 Balance Box Height Adjustable Wall Mount Kit is used for televisions, monitors, and interactive touch screens. It features 16 inch of vertical movement and supports monitors from 145 lbs. to 211 lbs. It comes with a patented spring system that neutralizes gravity for effortless vertical movement. The Balance Box wall mount kit is easy to install and used together with universal VESA mounts. This model provides a feather light movement