19 Non-metal hips for roofing; balustrades, not of metal; wood paneling; cement slabs; cement posts; partitions, not of metal for building; buildings, not of metal, namely, prefabricated non-metal buildings, portable non-metal buildings; cornices, not of metal; moldings, not of metal, for cornices; windows, not of metal; roof coverings, not of metal; stair-treads, in the nature of steps, not of metal; beams, not of metal; girders, not of metal; props, not of metal, namely, non-metal weight-supporting corbels for building purposes, construction elements not made of metal being supports; stringers as parts of staircases, not of metal; lintels, not of metal; buildings, transportable, not of metal; porch structures, not of metal, for building; moldings, not of metal, for building, namely, moldings not of metal for cornices, non-metal architectural moldings, non-metal decorative moldings for use in building construction; wall claddings, not of metal, for building; signaling panels, non-luminous and non-mechanical, not of metal; wall linings, not of metal, for building; floors, not of metal; ceilings, not of metal; platforms, prefabricated, not of metal; window sills, not of metal; statues of stone, concrete or marble; roofing, not of metal; arbor structures, not of metal; trellises, not of metal; casement windows, not of metal; wainscoting, not of metal; works of art of stone, concrete or marble; shuttering, not of metal, for concrete; window frames, not of metal; chimney cowls, not of metal; tiles, not of metal, for building; floor tiles, not of metal; paving slabs, not of metal; building panels, not of metal; statuettes of stone, concrete or marble; duckboards, not of metal; wooden floor boards; wall tiles, not of metal; slabs, not of metal, for building