No, our furniture is assembled and pre-adjusted, ready for installation. The set includes wall plugs and screws to install the cabinet to the wall. In series, in which hanging cabinets and shelves have a door with a universal opening side, it is only necessary to screw the door and the handle on the side you want, specifying the opening to the left or right side. After installing the furniture in the bathroom, it may be necessary to finally adjust the drawers and doors so they are leveled. The regulation method can be found in our guide.