After giving it some thought for sometime. Some concern over heat that my vent through refrigerator vent. So, I conducted a test. I ran the fridge on propane for 3 hours. I tested the temp at the vent and the exterior trailer wall 6 feet away and there was no difference.
I mounted the TV mount to the plastic refrigerator vent with 1/4" bolts and 1" fender washers.
There is a outlet behind the vent that the refrigerator plugs into. I turned it into a double outlet and can plug the TV in there.
There is 4" of air space between the TV and the Vent I found a 32" TV that only weighs 9 1/2 lbs. Obviously the TV will be removed when towing. It works great!!! I should have done it sooner.
I can't get pictures to post so you will have to use the link
https://i.imgur.com/y0xkiT4.jpg
Note: Moderator edit to fix picture link.
2017 Coleman 300tq by Dutchman Toy Hauler. 34.5 feet long and under 10k Gross. 500 watt Solar 2000 watt Inverter, 1999 Ford F250 2WD 7.3 4R100 DP Tuner, S&B Cold Air Intake, Gauges, 6.0 Trans Cooler, Air Bags.