Dumb question about displaying bats in man cave

[EricTheRed44]

I have always just displayed my bats openly (on a rack without protection/away from direct sunlight). They're on a wall in the center of the room, so the wall they're attached to doesn't get too warm or too cold.

I am now planning on displaying bats on the walls with nature right on the other side. Is there any risk to the bats being on a wall (in ohio, so freezing and hot at times) or am I ok? It's a bi-level so half in ground and half above, the bats would be just under the windows (shielded from light). I've only been collecting game used for a few years, so I havent ran into any problems in the limited time I've been displaying them.

Thanks

Joe