Customize your window treatments with this elegant exterior mounted cornice constructed of solid poplar wood. The cornice arrives unfinished ready for you to stain and finish. Interior dimensions are 48 in. wide x 3-1/2 in. tall x 4-1/2 in. deep. Exterior dimensions are 49-1/2 in. wide x 4-5/8 in. tall x 5-1/4 in. deep. Custom sizes available special order at store.