The Elta 064‑0315‑C is a 315mm louvre shutter manufactured from robust light grey polypropylene, ensuring long-lasting performance and resistance to environmental wear. This shutter opens automatically in response to airflow, enabling efficient ventilation without manual control. It is designed to be mounted separately from the fan, ideally positioned downstream within the ductwork. This makes it a practical solution for passive airflow regulation in various ventilation systems.