We have a 2011 Flagstaff Micro Lite 18FBRS. It's the same model as yours, just the 18 foot model. Since the couch leans back toward the window just a little (I didn't notice this until I measured), you have a little more space near the floor than at the top part of the couch. At the floor, it's 13 inches from the metal bar of the couch to the wall. At the top, the couch back is about 8 inches if you measure from the wall to the bar inside the couch cushioning. If you measure from the wall to the cushion without pushing the cushion until you feel the bar, you have about 7.5 inches. We have room to store store the table, 2 fold up lawn chairs as well as a few smaller items on the floor about the size of a tackle box. Hope this helps.
