These cabinets were custom built. I had to remove the original wall covering to the framing. Then removed studs, reinforced the remaining framing with headers and doubled the remaining studs to carry the load. Four insulated boxes were inserted in the rough openings. The whole unit was faced with 3/4" material. All the drawers were made to fit and the drawer fronts, door and shelves are made of 3/4" plywood edged with solid wood. It was lots of work in a small room, upstairs, in a 100 year old house. oh yea then the cabinets and whole room was painted.