Re: Why are cushions mounted on boards?
It would help if you said what Class B you are talking about, what type convertible bed you have and maybe photos because not all Bs have cushions fastened to plywood. There are many reasons. Maybe the design is such fastening keeps them from slipping. Maybe it makes the conversion from dinette to bed easier or faster. Maybe that's just the way the designer decided to do it with no specific reason.
2021 Advanced RV 144 custom Sprinter
2015 Advanced RV Extended body Sprinter
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter