Roof Ventilators are said to work by creating a zone of negative pressure which removes hot air & moisture out of the building. Made using superior quality galvanized steel, they are installed in factories, manufacturing units, and warehouses as well. These ventilators are designed to maintain optimum internal temperature so as to prevent any damage to perishable items. They are not known to require electricity for working as they use wind's energy for rotation. Roof Ventilators offered by us have been installed with superior quality bearings for assuring smooth and reliable operation. They are greatly admired for showing ability to bear allow weather conditions.