Fully flexible ventilation pipe made of two-layer polyester film, aluminum-coated. Integrated spring steel spiral for reinforcement. Smallest possible bending radius, can be bent back as required, no material fatigue, no leaks. No release of poisonous gases in the event of fire, self-extinguishing. Operating temperature from -20 °C to 120 °C, maximum operating pressure 2500 Pa, max. flow speed 30 m/s. ,
