Natural ventilation is the environmentaly friendly way of cooling commercial and industrial buildings. In larger open plan buildings and factories, it is ideal for both day to day and smoke control applications. Clear opening ventilators allow an unrestricted release for warm air collecting under the roof. Ensol rain sensing systems close the ventilators in wet weather and automatically re-open them once raining has stopped. High aerodynamic efficiencies guarantee the best possible performance from our range of natural ventilators. The products are available in a variety of sizes, control options and finishes to suit all applications.