Trying to find a monitor to flank my 34UM64-P

[bastage]

I am looking for a suitable monitor to run in portrait next to my 34UM64-P. I have had my laptop doing this, but going back to an actual desktop so I would like a second display to continue the usefulness.

Monitor is a 34" 21:9 2560x1080 resolution (I am kinda blind so I prefer the 1080 vs the normal 1440 or more).

So the vertical height is approx 13.5"