19 NON-METAL STAIRCASES AND NON-METAL ACCESSORIES AND COMPONENTS FOR STAIRCASES, NAMELY, RAIL UNITS, STARTING STEPS, TREADS, RISERS, SHOE RAILS, HAND RAILS, WALL RAILS, PIPE RAILS, GOOSENECKS, BALUSTERS, NEWELS, DIVIDER POSTS, LANDINGS, RETURN NOSINGS, MOULDING, SHOES, BRACKETS AND ROSETTES