The place to look for mounts is
MonoPrice. Good prices, high quality mounts, and a mount for pretty much any situation you can come up with. When we had our '03 Kiwi it had a folding TV shelf, so I needed a mount that could clamp to a shelf, be easily removed (both mount and TV), and have the ability to be tilted more than 45 degrees. With our X20E I was able to still use the mount, and I don't have to take it down when not in use.
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Chuck
2013 Jayco Jayfeather X20 E (sold)
2016 Chevy Silverado LTZ 2 Z71 Crew Cab (sold, and dearly missed)