19 NON-METAL BUILDING MATERIALS AND ELEMENTS, NAMELY, ROOFING PANELS; WALL PANELS; GLASS PANELS; DOOR PANELS; FENCING PANELS; CEILING PANELS; ROOFS; ROOFING MATERIALS, NAMELY, GLAZING BOARDS, RIDGE BEAMS, EAVES BEAMS, GUTTERS, SEALING GASKETS, DECORATIVE PANELS AND MOULDINGS; WINDOWS; WINDOW FRAMES; DOORS; DOOR FRAMES; PLASTIC ROOFING PANELS AND TRANSLUCENT PLASTIC ROOFING PANELS