Reddit reviews Ergotron Mounting Pole - Mounting Pole - Black

Yes it is. Just a note - if you want to stack two of these monitors and have them more than 1" above the desk, you'd also need a longer mounting pole

Right now I have three 24inch monitors side by side and - while looking at the right side of the right-most screen I cannot really see what is going on on the left side of the left-most screen - having to turn my head all the way left/right honestly does not bother me that much. With adding a second row of monitors of the same size I am slightly concerned about the vertical size of the whole setup, but hopefully I can position everything in a more or less comfortable way.

As for the stands, at the moment I use an Ergotron Dual side-by-side arm (link) for two of the screens and this arm is just great. It can wobble slightly when bumped into (or the table it is screwed onto) but it still very stable and has outstanding capabilities for adjusting the position of the monitors. It is miles ahead of the second monitor arm that I use, which is a simple/cheap single-screen arm that I picked up just so I do not have to use the monitor stand (very similar to this one.)

So for the six-monitors setup I am looking at (three of) the Ergotron LX Dual stacking arms (link.) With longer extension poles I should be able to raise the monitors high enough so that the bottom row does not sit right against the top of the desk and if my experience with Ergotron is of any indication, the entire construction should be stable enough for my needs. I did consider a dedicated "scaffolding" for six screens but I would also like to be able to place all of the screens side by side in pivot configuration (which is a layout I sometimes use with my three screens.)

I very occasionally switch to Windows and play games on my PC and I usually either do it on all three monitors (using NVidia Surround) or disable all screens but one and use it for launching games for the Oculus Rift. If I connect the bottom row of the monitors to the GTX 980Ti I can still continue playing games as per usual, on either three screens or the Rift; I mentioned in a different reply that I do not care if all those six monitors will work fully in Windows.