It is made to connect with air heater for hot and cold air supply and exhaust for confined space. Description -Made of red fire proof fiber glass and silica gel coating. -Supported by helix steel wire so that it can stay on its own. -The steel wire is wrapped by fiber glass strip so as to achieve wear-and-tear proof. -Consist of three layers, two fiber glass fabric layers, and one insulation layer in the middle. -Thickness: 1.0mm -It is sewn like blanket to secure the insulation so that it will not move. -Endure high temperature: +350℃. -Sewn with heat resistant thread. -Available sizes: 100mm-1500mm. Standard length: 5m and 10m. - Custom sizes are upon request. Features -soft, fire resistant, wear proof, easy connection -Flexible and light weight for easy use and installation. Rolls up for easy transportation and storage. Application Hot air exhaust and supply for smelting, boiler, heat equipment in high temperature environment. -High temperature boiler air exhaust and supply - Motor vehicle exhaust emission -Factory solder smoke