You could just find an image that looks nice and use that. In dual display rooms you will see all of it. In single display rooms, you will always see the right side of the image. Even if you only use one display, it has to be that size. The reason you need one that size is because the image needs to stretch across two front of room displays. You need an image file which is exactly 3840×1080. The process itself is really straightforward. In this post I wanted to give you some guidlines on how to spruce up the front of room displays in your Microsoft Teams Room.
I wrote an updated version of this post here.
