Building and construction materials and elements, not of metal, namely, wood and concrete but not including shingles, roofing membranes and roof coverings; structures for buildings and high rise buildings, including high rise hotel and office buildings, namely, prefabricated timber based building structures and wall elements; transportable buildings, not of metal; statues and works of art made of stone, concrete and marble, included in the class; doors, gates, windows and window coverings in ...