boards

Hi, I'm looking to make a bed for my SWB Reimo pop-top but cannot find the dimensions anywhere. If anyone out there could post the dimensions of the boards and the matress I'd be very grateful indeed. Much obliged, Colesy.

I'm planning to add boards above my rock'n'roll bed to create bed in my hi top. Any advice in the kind and thickness of board to use. Was planning to use ply but wondering how thick I would need. Needs to hold 2 kids with total weight of 12 stone. Cheers