Granite; Marble; Floor tiles, not of metal; Wall tiles, not of metal; Glass mosaics for use in building construction; Ceramic tiles; Refractory construction materials, not of metal; Refractory bricks and tiles not of metal; Building materials not of metal, namely, plastic pipe supports, wall hardwood, decking wood, particle boards, building timber, building stone, cladding; Building glass; Window glass for buildings; Stained-glass windows; Window glass for building; Safety glass for building purposes
Nonmetallic Building Materials