re: Wall Paneling

I guess you don't get too many trailer upgrade projects do you? 🙂
Impressive as always, nice peek into your process where you pre-assemble in your shop to get the fit 100% 

I really like the "box corbels" you install in the corners, Great way to handle those pesky alignment and style issues.
I tried something similar on the LR ceiling about 20 years ago, certainly don't want to try it again!