According to Nice classification heading for class 19 states Building materials [non-metallic]; Non-metallic rigid pipes for building; Asphalt, pitch and bitumen; Non-metallic transportable buildings; Monuments, not of metal are include in Class 19.
The heading gives you a brief broad overview about what exactly is including in a particular class. This Class includes, in particular: – semi-worked woods (for example, beams, planks, panels); – veneers; – building glass (for example, floor slabs, glass tiles); – glass granules for marking out roads; – letter boxes of masonry. This Class does not include, in particular: – cement preservatives and cement-waterproofing preparations (Cl. 1); – fireproofing preparations (Cl. 1).