Bradford^® Hurricane^®Ventilators are constructed from corrosion resistant aluminium and feature a Tandaco pre-packaged double row bearing system, for optimum performance under a wide range of conditions. Hurricane™ ventilation systems are designed to ensure your building will have the best ventilation performance, with the right air exchange rates. For your peace of mind, all our standard products have a 15 year warranty. Hurricane™ ventilators have been performance tested to Australian Standard 4740 (Performance of Natural Ventilators) to determine flow rate capacities. They have also been wind load tested to 195km/h and tested for rain penetration to Australian Standard 2428.1.