I modified it to have a metal bed frame underneath, instead of the wood supports. - which makes more sense, considering how heavy a king-sized mattress weighs. To keep the rails in place I added small 90* attachment pieces, that I predrilled and screwed in place underneath (I picked them up at the hardware store). This is now perfect for when the kids decide sleeping by themselves is stupid, and the whole family ends up in our bed. Also, it looks very nice.