non-metallic materials for roofing, structuring of building, cladding and wall covering, namely, roof tiles, fittings for roofing in the nature of tiles and bricks, hip tiles, verge tiles, ventilation tiles, structural bricks and large format monolithic tile pieces, facing bricks and large format monolithic brick pieces, tiles for walls, tiles for floors, made of clay, concrete, cement, asphalt, composite or synthetic materials with and without fibre reinforcement; bricks, lintels, ledges, tiles for building not of metal; gutters, window shutters, chimneys and chimney cowls, wood beams and wood girders, concrete beams and concrete girders, plastic beams and plastic girders, structural framework comprising of window frames and door frames sold as a unit and cornices not of metal for buildings