double wall bracket

You'll need to print the wall part in sideways for a stronger holding and print 2 or 4 of these for your screen.

Infill: 30%

The version 2 worked fine on my LG 27" LCD monitor for a month now and continue to seems ok with the weight. The v3 version I didn't tested yet but I made it to be a bit stronger in the internal front curve since the internal back curve made a ton of difference on v2 compared to v1.