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. OEM/Compatible: Compatible; Workstation Type: Traditional Desk/Table; Series Name: Fellowes™ Professional Series; Width (Max): 4.38".