Fits Ultrawide Screens: Single mount for ultra-wide monitors up to 35' in size and 24.2 lbs in weight with 75x75mm or 100x100mm VESA patterns. Stand secures to desks up to 3.34 thick with heavy-duty C-clamp or 1.37 with optional grommet mount Powerful Mechanical Arm: The spring-assist arm counterbalances the weight of your large monitor for optimal ergonomic height adjustments. Stand also boasts a wide range of movement that works well with touch screens