11 Non-metallic basins as part of plumbing fixtures and non-metallic plumbing fixtures; water supply installation structural materials, namely, tubes, pipes, connectors, conduits and hoses, and brackets made from foam plastic, rubber and/or fabric; and ventilation installation structural materials, namely, fitting supports, mounting brackets and framework; plumbing installation fixtures, namely, installation supports and brackets, and water, sewage, and vent pipes, connectors and fittings