Custom made shelves using crown molding to support them on the wall. They are attached to the wall by screwing a 2x2 board on the wall. The shelf is attached to the 2x2 with small screws from the top of the shelf. An eight inch wide primed shelf is $10 a foot and a six inch wide primed shelf is $8 a foot. I charge $2 more a foot for a painted shelf. I include all hardware needed to attach shelf to wall.