It's on the pricier side for a single monitor mount, but the trade-off is improved reliability and flexibility. HUANUO Single Monitor Arm Mount (HNSS7) (Black) at Amazon for $89.99 There are more ...
Fits for Ultrawide Monitors up to 43" - Premium Dual monitor desk mount fits most of flat or curved computer screen up to 43" and hold 2.2 lbs to 37.5 lbs each monitor arm ,compatible with VESA ...