For the bed I bought 4 1200x600 mm MDF boards, cut them down to 900x600 mm, and connected two of each with a "piano hinge". This will be the foldable underlay of two beds which will be placed on top of the work top. Since this vehicle has the raised roof, it is not necessary to put the bed down very low, but instead the whole worktop structure can be used as a stable basis. These two beds (one on the left, one on the right) will also be able to be connected via a bridge board, so that the whole vehicle width can be utilised. This is a distinctive advantage over most campervan installations that I have seen - most use the 3/4 with for the Rock&Roll bed only, so that the width of such a bed usually is only about 90-110 cm. Mine will be able to cover the whole width of 140 cm - a nice double.