the problem with this item is with the manufacturer,  Instructions are not clear,pre-drilled holes for cam-bolts contain a plastic piece which the bolts screw into and they were attached with carprenter's glue, carpenter's glue doesn't do the job in manufactured wood. The dowels are also too small so we had to re-glue everything with weld bond.  Once done the inside shelf was backwards, thanks to the instructions.  Once glued it couldn't be taken apart so we have to drill new holes for the door hardware.  The end result is exactly what I wanted but we had to go through much duress to get to the finished piece.