Ducts of metal, for central heating installations; ducts of metal for ventilating and air conditioning installations; pipes and tubes of metal; non-electric cables and wires of common metal; reinforced ventilation ducting, fire-retardant ducting; insulated metallic ducts; reinforced metallic ducts; cowls; roof cowls, heavy duty cowls, roof cowl fan kits; vents, grills, louvres of metal; parts and accessories for all of the foregoing

Air diffusion and ventilation apparatus; fans; air-conditioning installations; air-deodorising and purifying apparatus; parts and fittings for all the aforesaid goods