Professional Series Depth Adjustable Dual Monitor Arm, 360 Deg Rotation, 37 Deg Tilt, 360 Deg Pan, Black, Supports 24 Lb Two fully adjustable monitor arms for optimum viewing control. Easy to mount – clamp attaches to desktops 1-3” thick or through grommet holes at least 3 1/4” in diameter. 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). Each arm holds a flat panel monitor up to 24 lbs. Meets VESA mounting standards.