I have a [email protected]
Clamshell that I recently sold and I had a custom mattress made for it as my wife and I never used the dinette inside. We permanently placed the mattress in the unit and took out the cushions. It fits the [email protected]
perfectly and is very comfortable and much better than sleeping on the seat cushions. The dimensions for the Mattress are 70 inches long by 59 inches wide and it is 8 inches thick made of firm memory foam. It originally cost around $500 dollars but I would entertain a fair offer over $100 bucks, it is one year old.
Let me know what you think