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Air-conditioning apparatus; Air-conditioning, air cooling and ventilation apparatus and instruments; Air conditioning apparatus and installations; Air filtering installations; Air purifiers; Air purifiers; Filters for air conditioning; Furnaces; HEPA filters for household use; HVAC units; Air filters for air conditioning units; Air filters for furnaces; Air filters for heating and cooling registers; Air filters for HVAC units; Air filters for industrial installations; Components for air conditioning and cooling systems, namely, evaporative air coolers; Dampers, namely, control devices used in air ducts to regulate the flow of air; Evaporative air coolers; Gas furnaces for commercial buildings; Gas furnaces for residential homes; Industrial furnaces