Could be a backer board or metal. Using a slide type of tv mount I added a 1" board to the wall and the slide at the top in my last 5er. Otherwise adding or removing the tv would be a guessing game. I used 1 1/4 for the board (4) and 2 1/4 (4 more) for the bracket. Over 30,000 miles and held tight.
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2022.Montana 3855 BR
2019 F350 6.7 4X4 DRW
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