The Fellowes Depth Adjustable Monitor Arm is fully adjustable for optimum viewing control. It is easy to mount - clamp attaches to desktops 1-3" thick or through grommet holes at least 3-1\/4" in diameter. The arm elevates monitors from 3-1\/2" to 16-1\/2" above the desk with a reach of 2-1\/2"-27". Tilts up or down +\/-37° and freely swings left or right (360° rotation capability). Holds flat panel monitors up to 24 lbs. Meets VESA mounting standards.