Air conditioning apparatus; Air conditioning installations; Air-conditioning, air cooling and ventilation apparatus and instruments; Fabric air dispersion ducts for distributing and dispensing air as part of a HVAC system
Environmental Control ApparatusDucts, not of metal, for ventilating and air-conditioning installations; Non-metal air conditioning ducts; Non-metal ventilating ducts
Nonmetallic Building MaterialsInstallation and repair of ventilating and air-conditioning systems; Installation and repair of ventilating and air conditioning equipment; Installation and replacement service for ventilating and air conditioning systems; Installation, maintenance and repair of ventilating apparatus; Installation, maintenance and repair of ventilating systems; Repair and maintenance of air-conditioning apparatus
Building Construction and Repair