Hey Tony, not much help since I don't have the pass through dinette in the toy bay or the couches to be able to measure clearance between them. The space between wheel well covers is like J said. There are options on what you hang on the HappiJack; one bed or two and the pass-through dinette. I understand that the new units have options on where to stow the dinette (top or sides).
Measurement - clearance- between HappiJack vertical tracks is 91"; and inside to inside wall is slightly over 93-1/2.
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