6 METAL I-BEAMS, ANGLES, CHANNELS, TUBES, DOORS, DOOR FRAMES, WINDOW FRAMES, SHUTTERS, BLINDS AND LOUVERS, DOOR HINGES, LATCHES, LOCKS AND SILLS, WINDOW WEIGHTS, LOCKS, STOPS AND SLIDES, HINGES AND LATCHES AND SHUTTERS FOR BLINDS
19 ROLLED, DRAWN, EXTRUDED AND MACHINED STRUCTURAL MEMBERS OF PLASTICS
20 WOODEN STRUCTURAL MEMBERS-NAMELY, SILLS, STOPS AND SLIDES FOR SHUTTERS AND BLINDS