Abstract: A decorative grille having a substantially rectangular frame in which each of the side members includes a substantially C-shaped channel section and a mounting flange extending substantially coplanar with a leg of the channel section. A plurality of spaced, parallel rods extend between two parallel side members of the frame. The rods have end portions which extend into the channel sections of the side members and are secured thereto by screws extending through the base of the channel sections and threaded into the rods. A plurality of plastic decorative grille elements are mounted in rows between adjacent rods, and between each of the other two side members of the frame and the adjacent rods. The grille elements which are adjacent a rod are interconnected to each other through the rods.

Abstract: A lattice assembly for carrying tiles and electrical and electronic components comprises a plurality of star-shaped lattice elements each having a plurality of arms whose outer ends constitute connecting portions formed with downwardly extending arc-segmental tabs. These connection portions are connected together at anchors each formed with a central cylindrical upstanding abutment body adapted to engage snugly against the ends of a plurality of arms and formed with a plurality of arc-segmental recesses each adapted to receive a respective tab. In addition each connection portion is formed with a split pin having barbs and adapted to be received within sockets in the anchor so that the connection portions can be snap-fitted to the anchors. The elements are each provided at their central node with a spacer body having a height perpendicular to the plane of the element equal to half of the height similarly measured of the anchor so that two such groups of such elements can be mounted together back-to-back.

Abstract: A grille assembly readily mountable with a window frame for securing a window against unauthorized entry. The grille includes a plurality of horizontal members, each of which has longitudinally spaced, vertical openings. A plurality of vertical bars extend into the vertical openings of the horizontal members, and concealed mounting assemblies mount the horizontal members with the window frame.

Abstract: A combination louver and window sash assembly includes a plurality of louver boards extending horizontally and each having a cross-section of substantially inverted-Y shape. A pair of parallel, vertical sash frames having vertically extending slots faced in opposed relation to one another and including pairs of cutout recesses formed in the marginal edges of the slots. The louver boards have their horizontal ends thrusted resiliently through the slots and received snappingly in the cutout recesses.