Natural,economical and effective way to exhaust hot air round the clock without conventional power or any operational expenses. Using only the power of wind speed 1.4 KMH, turbo ventilators silently draw heat, damp and stagnant air, humidity fumes,odours, dust, smoke from inside the building of factories, godowns, workplaces etc. Features Zero maintenance cost with no consumption of electricity Strong and light weight Easy installation Natural wind without noise Natural light with day light polycarbonate base fixture