The Helios VK 100 VE is a white automatic overpressure shutter, designed to seal external air outlets in 100mm ductwork. It includes a rear conical spigot and foam sealing strip for easy plug-in installation and a secure fit.
Constructed from UV-resistant, impact-resistant plastic, the frame and louvres are built to withstand outdoor conditions while maintaining long-term performance. The shutter opens with airflow and closes automatically when airflow stops, helping to prevent drafts, insects, and debris from entering. The number of louvres varies depending on the model size. Perfect for clean and discreet wall installations in residential or commercial ventilation systems.