Abstract: A sectioned window cornice may be adapted to various widths of windows and drapery support rods thereon. The cornice may be easily assembled from several identical, repeating panels with symmetrical attachment ends to provide for universal assembly of the panels to form a cornice of the desired length. The cornice may include a decorative bas relief or other pattern thereon, which pattern preferably repeats with each panel and is adapted to match exactly with the pattern of an adjoining panel, to avoid any unsightly perceived mismatch of shapes and patterns on the assembled cornice. The assembled modular sections are secured to the front surface of a drapery support rod or the like by hook and loop fastening material, thereby providing for assembly and installation without need of any tools and enabling the cornice to be assembled and installed by unskilled labor in a minimum amount of time and effort, and enabling an installed cornice to be removed and replaced easily, as desired.