DUAL MONITOR DESK MOUNT: This 2 monitor mount works with screens 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 inches in size, with a maximum support weight of 17.6 pounds each arm, using the 75x75mm or 100x100mm VESA square bolt hole pattern found on the back of the monitors FEATURES: Two monitor stand has full motion, height adjustable arms that are made of heavy duty steel and have integrated cable management clips on each arm to keep your cables organized. Comes C-clamp base for use on desktops up to 3.5" inches thick