HD, this is sort of a long way around, but very accurate. Go here
https://www.rvt.com/DRV-Mobile-Suite...30295-UX124426
and download the floor plan to your computer. Expand it up to print as large as your printer will handle. Probably on a 9x13 or so. The distance between the walls in the rear sofa area is 95 inches on the money. Scale the entire RV with a home-made scale from the 95" and you have your information.
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