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