Fully adjustable for optimum viewing control. Easy to mount - clamp attaches to desktop or through grommet hole Elevates LCD monitors from 3-1/8" to 15-1/2" above the desk Minimum reach of 2-1/2" to a maximum reach of 21-1/2" Tilts up or down +/- 37 degrees and freely swings left or right (360 degree rotation capability) Mounts to surfaces 1-3" thick or through grommet holes at least 3-1/4" in diameter; no tools required Meets VESA mounting standards Holds LCD monitor up to 20 lbs Fellowes Depth Adjustable Monitor Arm