Avoid difficult compound miter cuts with outside cornice connectors and show large outside crown connector block is sized to fit crown mouldings with a maximum width of simply install the crown connectors in the corners of your ceiling before installing your cornice and straight-cut your mouldings to fit. These wonderful accessories add a touch of architectural interest all while making your crown installation a breeze. This versatile product is designed to flatter a range of crown moulding styles and motifs.