air ducts of metal for ventilating and air-conditioning installations; air ducts of metal for buildings for ventilating and air conditioning installations; air ducts of metal for use in wall cavities of buildings for ventilating and air-conditioning installations; air ducts of metal for use in underfloor areas of buildings for ventilating and air-conditioning installations; air ducts of metal for use in ceiling areas of buildings for ventilating and air-conditioning installations; ducts of metal for central heating installations; ducts of metal for air cooling installations; pipes of metal for central heating installations; ducts of metal for combined heating and air conditioning installations in buildings

Thermal controls, namely, electric controlling devices for thermostats; thermostats; room thermostats; thermostat controllers for heating installations; thermostat controllers for air cooling installations; thermostat controllers for air heating and cooling installations; electrical control devices, being timing devices for heating installations; electrical control devices, being both thermostats and timing devices for heating installations; electrical control devices, being timing devices for air cooling installations; electrical control devices, being both thermostats and timing devices for air cooling installations; temperature monitors other than valves for central heating installations; temperature monitors other than valves for air cooling installations; temperature monitors other than valves for combined air heating and cooling installations; programmers, namely, temperature controllers for central heating installations; programmers, namely, temperature controllers for air cooling installations; programmers, namely, temperature controllers for combined central heating and cooling installations; temperature control apparatus for central heating installations, being thermostats other than valves

Grilles of metal in the nature of ventilation fan grilles; air duct grilles of metal for ventilating and air conditioning installations; ventilation grilles of metal for fitting in buildings; ventilation grilles of metal for fitting in ceilings; ventilation grilles of metal for fitting in walls; ventilation grilles of metal for fitting in floors; Installations for air conditioning; apparatus for air conditioning; air cooling apparatus; installations for air cooling; installations for the heating of air; apparatus for air heating; combined heating and air conditioning apparatus; installations for both heating and air conditioning; central air conditioning apparatus; central air conditioning installations; central heating apparatus; central heating installations; installations for centrally air conditioning buildings which include small ducts for the conducting of air; installations for centrally heating of air in buildings which include small ducts for the conducting of air; air delivery apparatus for cooling buildings, namely, air-conditioning, air cooling and ventilation apparatus and instruments; air delivery installations for cooling buildings, namely, air-conditioning, air cooling and ventilation apparatus and instruments; air conditioning installations for use in commercial buildings; air conditioning apparatus for use in commercial buildings; air conditioning installations for use in office buildings; air conditioning apparatus for use in office buildings; air conditioning installations for use in residential buildings; air conditioning apparatus for use in residential buildings; air heating installations for use in commercial buildings; air heating apparatus for use in commercial buildings; air heating installations for use in office buildings; air heating apparatus for use in office buildings; air heating installations for use in residential buildings; control units for heating installations being thermostatic valves; instruments for temperature control in central heating installations, being thermostatic valves; coils for cooling in the nature of coils as parts of distilling, heating or cooling installations; coils for heating in the nature of in the nature of coils as parts of distilling, heating or cooling installations; coils, being parts of installations used for heating or cooling; fans being parts for air conditioning installations; fans being parts of air heating installations; fans for use in air conditioning; fans for use in heating; filters for air conditioning; coils being parts of heating installations; louvres being air conditioning apparatus; Non-metallic grilles for ventilation fans; non-metallic air grilles for ventilation fans; grilles for ventilation fans for use in buildings made from wood; grilles for use in buildings made from plastics for ventilation fans; non-metallic ventilation grilles for fitting in buildings; non-metallic ventilation grilles for fitting in ceilings; non-metallic ventilation grilles for fitting in walls; non-metallic ventilation grilles for fitting in floors

air ducts made from non- metallic substances for ventilating and air-conditioning installations; non-metallic air ducts for buildings for ventilating and air-conditioning installations; non-metallic air ducts for use in wall cavities of buildings for ventilating and air conditioning installations; non-metallic air ducts for use in underfloor areas of buildings for ventilating and air-conditioning installations; nonmetallic air ducts for use in ceiling areas of buildings for ventilating and air-conditioning installations; non-metallic ducts for central heating installations; non-metallic ducts for air cooling installations; non-metallic ducts for combined heating and air conditioning installations in buildings