Mattress for 28 BHS L-Couch

[checkmyque]

[p]I purchased a 2015 28BHS earlier this year. The mattress for the couch was missing. Livin Lite states the company that made the mattress no longer exists and they would give me $$ to purchase my owns. According to LL the mattress is 53" wide by 63 " long and folds. I was wondering if this is correct and can anyone point me in a direction to find a mattress?[/p][p]
[/p][p]Peter [/p]