Insulated & Non-insulated or PET flexible duct

Insulated & Non-insulated or PET flexible duct ( polyester, flexible duct) Aluminium flexible duct has various types, flexible with single or double steel; non-insulated or insulated flexible duct;fire-prevention flexible duct; combination flexible duct.They can bear the tempreture from -20 to +80,Fire rated AS 4254 - 1995; Operating pressure: -190 pa to + 1200pa General use: Exhaust and ventilation systems, heating cooling, refrigerated,With different gram thermal rated polyester blanket,Insulation code AS 4859.1 lowest price in China promised pack in standard carton or as request.