Sinks; heating, steam generation, cooking, refrigeration, drying, bathroom ventilation, toilet, water distribution installations and sanitary installations as well as parts of the aforementioned installations; heating installations powered by fuel oil or gas and parts thereof; air-conditioning installations and parts thereof; air and flue-gas cleaning installations, dust-removing installations for industrial purposes, water treatment installations as well as parts of the aforementioned installations; combustion plants for destruction of waste (with or without heat recovery) and parts thereof; apparatus and utensils for heating, cooking, refrigerating, drying, ventilating, and parts thereof; air humidifying apparatus; heating apparatus for solid, liquid or gas fuels or powered by electricity, fuel cells or nuclear energy; kitchen ranges and ovens for solid, liquid or gas fuels as well as electrically heated; boilers for central heating, combination boilers for central heating and for hot water preparation, kitchen ranges combined with a boiler for central heating; apparatus for hot water preparation, water heaters, convectors, radiators, radiant heaters, heat exchangers, expansion tanks, pressure tanks, heating coils, unit heaters, silencers in the form of insulating covers for burners and in the form of noise absorbers for exhaust gas pipes; reinforcing materials for gas, air, steam and liquid lines and ducts, particularly for heating installations, pipes for fuel oil and water and for sanitary apparatus and installations; valves, stop valves, faucets; bathtubs, bathtubs with showers, shower tubs, washtubs, washstands, mop sinks, washstands for dishes, flush tanks and urinals, toilets, toilet seats, bidets; plumbing fixtures made of ceramic materials; oil and gas burners, burners for solid fuel, as well as parts of these apparatus; fans; draft regulators for chimneys; filtering apparatus, water descaling apparatus

All goods in this class, especially installations and apparatus included in Class 11, all for heating, steam generating, cooling; installations and apparatus, all for air-conditioning, ventilating, water supply and sanitary purposes; air and flue gas cleaning plant; water treatment plants; air humidifiers; consumption water heaters; baths, showers, shower troughs, lavatories, water cisterns and urinals, all being parts and fittings for water supply and sanitary installations and apparatus; convectors, radiators, filter apparatus, all included in Class 11; water closets and closet seats, bidets; oil and gas burners, gas generators, ventilators, draught regulators (heating) for chimneys, and water softening apparatus and instruments, sound attenuators for dampening noise in heating and air conditioning plants; and parts and fittings of all the aforesaid goods falling in Class 11