Air-conditioning, air cooling and ventilation apparatus and instruments; Air filters for HVAC units; Decorative grills made of non-metal non-combustible materials for use in decorating evacuation ducts, air inlets, and hot air outlets of fireplaces; Direct vents for gas appliances; Drying apparatus for use in heating, ventilation systems, air conditioning systems and refrigeration systems; Fabric air dispersion ducts for distributing and dispensing air as part of a HVAC system; Fans for HVAC ...