Constructed of Laminsox fabric in various permeability. Typically applied on all kinds of heating &cooling places with general comfort requirement.Other correlative names are: Fabric Air Duct,Fabric Air Ducting,Fabric Duct,Fabric Ductwork,Fabric Air Dispersion,Fabric Ventilation,Textile Duct,Textile Ducting,Textile VentilationOther correlative names are: Fabric Air Duct,Fabric Air Ducting,Fabric Duct,Fabric Ductwork,Fabric Air Dispersion,Fabric Ventilation,Textile Duct,Textile Ducting,Textile Ventilation