The 9/16 in. x 2-3/4 in. x 96 in. WM52 Primed Finger-Jointed Crown Moulding is used where walls meet ceilings. Primed Finger-Jointed WM52 Crown Moulding is the best way to add interest to any room or space. Crown mouldings come in a variety of sizes and patterns and can be combined to create one of kind moulding buildups.