Metal screws; metal nuts; ducts of metal for ventilating and air-conditioning installations; metal expansion joints for floors and walls; metal valves, other than parts of machines, including those made of steel and titanium alloys; storage and inspection metal containment and inspection boxes.

Air-conditioning installations; heating installations; dampers [heating]; water distribution installations; fans [air-conditioning]; thermostatic valves [parts of heating installations]; heat pumps; air purifying units; thermostatic valves for radiators; metering valves [parts of heating or gas installations]; dehumidifiers; automatic temperature regulators [thermostatic valves] for central heating radiators; air conditioning units; water filters; air conditioning systems and apparatus; valves for hot water and heating plumbing installations; air vent valves; valves for heating bodies; heat exchangers, other than parts of machines; valves for zone heating and cooling systems.