Building materials, not of metal or concrete, made of and in the nature of plastic lumber from recycled synthetic grass; building materials, not of metal or concrete, made of and in the nature of lumber from recycled synthetic grass; building materials, not of metal or concrete, namely, non-metal interior and exterior construction boards, nailer boards, pavers, paving stones, fence posts, and edging stones; building materials, not of metal or concrete, namely, non-metal interior and exterior ...