Non-metallic floor formers, namely, non-metallic materials for constructing floors for wet rooms; formers and shuttering for defining a casting space for floors, namely, non-metallic materials for constructing floors for wet rooms; non-metallic materials for casting floors, namely, non-metallic materials for constructing floors for wet rooms; non-metallic hand rails and bars for [ bathrooms, ] baths, showers and toilets [ ; drain traps, not of metal or plastic ]