Class 019
Non-Metallic Building Material Products
Air ducts of non-metallic materials for buildings; ducted installations (non-electric, non-metallic); ducts, not of metal, for ventilating and air conditioning installations; non-metallic venting ducts; air diffusers, not of metal, (vents, grills) for ventilating, heating and air conditioning installations
Class 037
Construction and Repair Services
Installation, maintenance and repair of heating, cooling, ventilation and air conditioning apparatus, plants, systems, units, equipment and installations
