A bit shorter than Twin in my camper.
Twin everything (including sleeping bags) works in our 8526RLWS dinette.
Note: We went with a light weight Twin sleeping bag.
Get the size that is 39 inches wide as is fits perfectly.
The 39 inch sleeping bag is the cat's meow for the dinette.
We also use a queen size sleeping bag for the air sofa when we need it.
Setting it up and tearing it down every day gets old when you are using sheets. We just roll up the bags and store them, then reconfigure the sofa and dinette. Easy as pie.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW