The Definitive Wind-Powered Roof Ventilators
Since 1931, Flettner® has been the global leader in wind-powered ventilation technology.
Designed and manufactured in the UK, our rotary ventilators harness passing airflow to ventilate an enclosed space and are typically installed on commercial or passenger vehicles.
You may also find them on boats, properties and portable buildings.
Proven to Deliver
With global patent registrations and decades of engineering heritage, Flettner® products are trusted by fleets, converters, upfitters, end-users and specialists worldwide.
How Do They Work?
Flettner® roof-mounted ventilators rotate while the vehicle is in motion or when stationary in the presence of ambient air movement, operating entirely without electrical power or wiring.
Known for unrivalled reliability and exceptional durability, Flettner® ventilators operate successfully in extreme conditions-from tropical storms to Antarctic cold.
Solving The Challenges of Restricted Airflow
The cargo or passenger area of a vehicle or an enclosed space may experience restricted airflow when doors and windows remain closed for extended periods.
This lack of ventilation can lead to the buildup of humidity and temperatures. For certain applications, the accumulation of dangerous gases and poor air quality are also significant concerns.
When ventilation is inadequate, the area can become a sealed environment that poses safety risks to occupants and increases the likelihood of damage to the vehicle and its cargo.
Unanticipated circumstances can also intensify these issues.
Protect your people, your vehicle, and its contents with a wind-powered Flettner® Ventilator.