OZVENT manufactured by Horne is an energy free wind turbo ventilator built for the asian conditions. It provides air circulation in the space between the ceiling and the outer roof, and removes very hot, still air which increases room tempreture in your home or factory. Effective roof space ventilation includes OZVENT eave vents installed under the eaves to draw in fresh outside air, and an OZVENT ventilator to exhaust the superheated and moisture laden air.