Air cleaning apparatus; Air conditioning filters; Air exchangers for cleaning and purifying air; Air filtering installations; Air filters for heating and cooling registers; Air filters for household use; Air purifying apparatus and machines; Air-conditioning apparatus and installations; Decorative grills made of non-metal non-combustible materials for use in decorating evacuation ducts, air inlets, and hot air outlets of fireplaces; Deodorizing apparatus, not for personal use; Domestic air-co...