Sounds like just another profit driven item. I've seen a few older travel trailers using them. The slides on trailers are much deeper than slides on a MH and the general quality of components goes up with the price you pay. IMHO...if they were structurally necessary, they would come with the unit new.
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Now an SOB
Traded Thor for Melbourne Prestige 24NP
2018 THOR Chateau 35SF
Two Labs, Bugsie & Blondie
Blondie passed in 2020 at 5 to Leukemia
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