It's a sort of galley kitchen, but a bit wider. As you go in the fridge is on the left with normal wall behind it, then the wall turns in at 90 deg and carries on to the other end. This bit has units with built in oven and worktop with hob and cupboards along the wall over the oven and hob. The wall after the fridge seems to be board or something - sounds different when I knock on it. Why would this be?