Bought two of these as our daughters bed comes out from the wall not against it. Forget using two as the way the rails are you can not put two of these on a bed. The rails below are very bulky and angle the bed/put large lumps. The idea of the rails being hidden is great however if your kids bed sits in any frame that covers even the tiniest part of the mattress forget this function. Incredibly disappointed, it gets two stars as it is made in a bombproof manner but that is the only reason it even gets 2 stars.