VIVO Quad Monitor Heavy Duty Desk Mount/Adjustable Stand / 4 LCD Screens up to 27" (STAND-V004E) COMPATIBILITY - Holds Four Screens up to 27" and 17.6 lbs each with VESA Mount (75x75mm and 100x100mm mounting holes) MOTION - +35 to -35 tilt, 360 swivel, 360 rotation, and height adjustability for ideal viewing angles STABILITY - High Grade Steel and Aluminum build and Heavy Duty C-clamp (4.25") or Grommet (with 3.5" opening) mounting options. Center Post is 31" tall CABLE MANAGEMENT - System integrated to keep potentially messy cables clean and organized ORIENTATION - Screens can be installed either in a portrait layout or in a landscape layout