• Rotary ventilation turbine increases air draught in the ventilation duct, encouraging air exhaust.
• Protects the air duct from the unintentional outside elements (leaves, dirt and precipitations) and prevents the back draught.
• Operation is based on the natural weather processes: the stronger the wind, the better the ventilation quality.
• Made of steel (galvanized, coated or stainless depending on the model required).
