What I find strange about this is that Jayco's pictures online show a TV mounted to the wall (see below). Look at mounts from
Mono Price. Very good quality and reasonable prices. I bought one for my old trailer that could be easily removed because it had a folding TV stand. I use it still and have it clamped to the TV shelf, which is above my fridge.
Here's a though, use a below cabinet mount. The entertainment systems easily slides out so you can get at the panel below it.
Here's an example of a below cabinet mount that might work. But check Mono Price carefully, they will have others. Search on both TV and monitor mounts.
2015 Jay Feather Ultra Lite X23B | Jayco, Inc.
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Chuck
2013 Jayco Jayfeather X20 E (sold)
2016 Chevy Silverado LTZ 2 Z71 Crew Cab (sold, and dearly missed)