I agree with Vigierbeton, I think it depends mainly on the distance or how you line up the monitors.
You can mount any monitor, but you would have to calculate exactly how wide the screens are and how long the arms are. Depending on that, it could be tight, but as soon as I'm in the office I can maybe put the screens as far apart as possible and measure how much space you have.

I haven't installed it like that yet. But you don't necessarily have to mount the monitors next to each other. One below and two above or vice versa works for sure.