Abstract: A door/window construction in which a unitary sheet of light transmissive material such as transparent or translucent glass or plastic is covered with masking material and provided with a plurality of small holes spaced apart at predetermined intervals. Fasteners are inserted in the holes and project outwardly to engage corresponding recesses in muntins that are thereby positioned and fastened on the sheet so as to give the appearance of a multi-panelled door/window. Fastening staples are provided to hold exposed portions of the muntins in place when stiles and rails of the doors/windows are attached. Also included is the method of manufacture and assembly of the doors/windows.