Fits Ultra Wide Screens: Dual mount for 2 ultra-wide screens up to 45 in size and 44 lbs in weight (per arm) with VESA 75x75mm or 100x100mm. Secures to desks up to 3.2 thick with heavy-duty C-clamp or 1.4 with optional grommet mount Premium Tension Arms: Spring-assist arms counterbalance the weight of your monitors for optimal ergonomic height adjustments, repositioning large screens at the touch of a hand