Prefabricated houses and living spaces [structures], not of metal or predominantly of metal; non-metallic or predominantly non-metallic structures; arbours [structures], not of metal; modular building units (non-metallic -) for the construction of prefabricated structures; houses [transportable] not of metal; non-metallic or predominantly non-metallic building materials and building elements; transportable structures, not of metal or predominantly not of metal, including panels, boards and elements for walls and other such materials and structures for building
Nonmetallic Building Materials