Mount-It! Height Adjustable TV Wall Mount, Interactive Counterbalance Full Motion Bracket With Gas Spring, Fits Up to VESA 600x400 and 55 Lbs HEIGHT ADJUSTABLE TV MOUNT- Up to 11.5" of vertical adjustment can be achieved with the touch of a finger. Gas spring arm tension is adjustable to suit the weight of your tv/monitor. FULL MOTION TV BRACKET  Swivel 90 deg left and right. Tilt 12 deg down and 2 deg up. Full motion capability makes is ideal for corner installation. Extends from the wall 2.63" to 17.75". GAS SPRING ARM  Gas spring works as counterbalance for ease of movement and height adjustment. The tension is ADJUSTABLE for various TV models. TV must weigh at least 20 lbs for the spring to work. UNIVERSAL COMPATIBILITY  Fits all TV brands on the market. Fits TVs up to VESA 600x400 and 55 lbs (Fits VESA 600x400, 400X400, 400X300, 400X200, 300X300, 300X200, 200X200, 200X100, 100X100 mm) EASY INSTALLATION  Easy single stud installation. Bracket comes complete with full instructions and INSTALLATION HARDWARE.