Crown molding, in cabinetry, is the finishing piece of wood used to cover the gap between the top of a wall cabinet and the ceiling to connect them. This piece is usually a decorative as well as a functional cover.
Crown molding is usually stylized and protrudes slightly over the cabinet box because the top of the molding angles away from the cabinetry. If the gap between the top of the wall cabinet and the ceiling is too great, a starter or riser molding can be used to cover that gap. There are different types of crown molding, including traditional molding an interior Crown Molding, which are the most common. Traditional crown molding is usually 3 to 6 inches high with a slight concave slope. Interior crown molding fits more into the look of the ceiling rather than an extension of the cabinetry.