I think if you're not sure what he means... no point posting!! However... I know exactly what he means.... but sold mine 2 years ago, with no pics of relevant parts! The supports for the infill cushions were in 2 parts with 3 pieces of wood attached to the existing seats for support.... folding end pieces and I think drop down legs. The infill cushions were in 2 parts. See.... I know what I mean but it's of no use to man nor beast without the pics!!! However, what I do know is that the only time I used them meant that I had way too many people on the boat and it was a total pain! So in 13 years I only used them once! Also, the supports and the cushions took up far too much space.Good luck.... but my advice is think very carefully before you do...