19 NON-METALLIC CONSTRUCTION MATERIALS, NAMELY, PLASTIC TUBES FOR CONSTRUCTION; NON-METALLIC PREFABRICATED VERANDAS; NON-METALLIC WINDOWS AND DOORS, AND NON-METALLIC GARAGE DOORS; NON-METALLIC HANGING DOORS; NON-METALLIC WINDOW CASINGS; NON-METALLIC STOPPERS; NON-METALLIC DOOR AND WINDOW FRAMES; NON-METALLIC DOOR CASINGS; NON-METALLIC WINDOW SASHES, ROLLERS, HINGES, GLAZING CROSS BARS, GLAZING MOULDINGS, SASH FASTENERS, DOOR AND WINDOW WOOD AND PLASTIC HANDLES AND LEVER HANDLES; NON-METALLIC PANELS, WITH OR WITHOUT WINDOWS, FOR DOORS AND ESPECIALLY FRONT DOORS; HANGING SHUTTERS, NON-METAL WINDOW AND ROLLING WINDOW SHUTTERS; INSULATED GLASS; GLASS AND NON-METAL INSULATING DOOR; NON-METAL DOUBLE PANE WINDOWS; NON-METALLIC, METAL LOUVERED WINDOWS AND BULLET-PROOF NON-METAL WINDOWS AND GLASS PANELS; STAINED GLASS WINDOWS; NON-METALLIC PROFILES, NAMELY, POLYVINYL CHLORIDE PROFILES FROM MANUFACTURING, DECORATING OR RENOVATING WINDOWS, POLYVINYL CHLORIDE WALL AND WINDOW STRUCTURES FOR MANUFACTURING, DECORATING OR RENOVATING WINDOWS, DOORS AND VERANDAS