Ducts of metal for ventilating and air-conditioning installations

Air-flow control apparatus including air-conditioning, heating, ducting, diffusers and associated fittings, and ventilation apparatus, including fans and in-duct, wall, ceiling, and roof mountings; air dryers (including hand dryers) and fan products, equipment and installations including extractor fans and shower fans; lighting products, equipment and installations; parts and accessories for the aforesaid goods included in this class