Grilles made of metal for use in relation to air conditioning apparatus; flexible and rigid parts and fittings in this class; ducts of metal for use in relation to air conditioning apparatus; sheet metal for use in relation to air conditioning and ventilation apparatus

Parts and fittings in this class for use in relation to air conditioning apparatus and installations not being the apparatus or installations themselves; louvres; dampers; plenums; registers; diffusers; grilles; apparatus and instruments in this class for regulating air flow, regulating directional air flow, regulating temperature and regulating noise produced by air conditioning installations