Broad compatibility: Fits single screens up to 34 inches diagonal and 7 to 20 pounds; compatible with VESA patterns 75x75mm and 100x100mm Fully assembled and ready to install: Includes two-piece desk clamp for panel and cubicle systems, plus freestanding tables; desk clamp attaches to desktops 0.47 to 1.25 inches thick; accessory grommet mount available (98-110) to install through a desk surface hole