Newmar Dutchstar platform under passenger side sofa?

IF you have a Hydronic Heating system, the box may have the Water lines and radiators for the Heating system. I CAN tell you it has nothing to do with BELOW the floor to the Basement. It can also have the hoses for a standard Furnace duct system. It also may be the way Newmar decided to mount a Sofa. The box is just installed and anchored to secure the sofa and seat belts if the sofa has seat belts. Is there a reason you are just not going to recover the existing sofa? Doug