Leisure Free Spirit SS (Single Slide)

Yes.16 inches is adequate. We found it easier to leave the centre, fill-in cushions out of the electric couch when down, so we use the ottoman at each end as the last part of the single(quite wide) bed on each side. That way the 'night crawler' gets up is not relegated to wiggle-woggling/shimmying or whatever to get to the end of the bed and head wherever nature calls...
I think many B owners ie those with electric couch, use this instead of a complete fill-in queen/king bed.
AL