Product Name: R1.5 Polyester Insulated Flexible Duct for Ventilation Duct Model NO.: FD Certification: ISO9001, Reach/ Burning Behavior Class A2 ventilation mode: mechanical ventilation Material: Aluminum+Fiberglass Color: Yellow/White Character: Insulated, Noise and Attenuation Transport Package: Cortons Origin: Zhejiang, China HS Code: 7609000000 Product Description DescriptionDouble-ply insulated flexible duct constructed with 2 piles of aluminum foil and PET film layers, insulated with glass wool material.High tensile steel wire helix.Highly flexible.Provides acoustical as well as thermal insulation. Different sizes are available as required.StructureAlu Flexible Duct+Glass Wool+Jacket ConstructionThickness of Aluminum Foil0.25mmThickness of insulation30mm-50mmDensity16kg/m3-32kg/m3Inner Diameter40mm-650mmStandard Length10m(max), or as RequestFire ResistanceClass A2 (Max) Temperature Range-30degree/+150degreeOperating Pressure3000PAMaximum Air Velocity30m/STypeHVAC Systems,Single Layer & Double LayerUsagefor Firefighting, for Air Conditioner, Industrial, for Environment Protection, for Ventilation System,Kitchen Smoke SuckerProduction WallProduction LineAdvantageCompressible and easy to transport.No need special tools for cutting and easy to connect.Fire resistance, not emit toxic gases in high temperatures.Excellent resistance to chemicals and corrosion.Outstanding durability and scuff-resistant.Can be bent in any direction.ApplicationRecommended for industrial or residential air movement applications.Suitable for HVAC systems.Dehumidification suitable for ventilation system of high, medium and low pressure central air-conditioning.