Non-metal vent cover for HVAC ducts; Sliding doors, not of metal; Rock materials used in building flooring, roofing, countertops, walls, cladding and fireplaces; Non-metal roofing; Non-metal window jambs; Non-metal wall tiles; Wooden flooring; Wood sheets for arts and crafts; Gypsum board; Door frames, not of metal; Non-metal weatherboard; Semi-refractory bricks, not of metal; Framework, not of metal, for building; Non-metal skylights; Tiles of ceramic for floors; Tiles, not of metal; Mold re...