The Curvent Fire-X Vertical fire ventilator is a louvred bladed fire ventilator with a slim profile design to enhance the architectural aesthetics of any building. The louvred blades are designed to close individually over each other providing a fully waterproof system in the closed position. In the event of fire, the spring loaded louvres automatically open to 90°, causing a “chimney effect” to allow hot gasses to escape, preventing fire spread while protecting the building’s structural integrity against building collapse. The smokeless layer of fresh air created at lower level creates safe evacuation passage for people and assists in firefighting disciplines. Natural day to day ventilation is made possible with the addition of electromechanical or pneumatic operating systems with the assurance of a highly cost- effective fire ventilator, designed to save lives. The Curvent Fire-X Vertical fire ventilator is renowned for its versatility. It provides for large ventilation areas, and can be custom-built to suit most steel structures and specific design requirements.