New in our Isotermo range, ISOTERMO 100. It is insulated with 100mm insulation to withstand the toughest cold and exposure. Isotermo 100 is an approved flexible ventilation duct that can be adapted to the desired length between 1-5m. AVAILABLE IN DIAMETER 100-315MM. Easy to install and cleanable. We have many more diameters. Get in touch and we'll tell you more.