My Airstream came with a large heavy 19" tube TV and a VHS player mounted in the center cabinet at the front. I chose to replace it with a 24" flatscreen with built in DVD player where disc enter from the right side of the TV.
I removed the old TV and mounted a standard computer monitor articulating arm with a clamp base. Around the outer edges (not visible) is Velcro strips that hold it in place while traveling. Usually add a bungie cord for support when traveling on rough roads like the PA Turnpike!!
For greater sound effects, I added a 22" Bose center speaker/amp that sits directly under the TV. Excellent sound in a small package
Here are before/during/after pictures of the install. If anyone has questions, I have more detail photos that can be shared.