The Elta 064‑0500‑C is a 500mm louvre shutter designed to manage airflow efficiently in ventilation systems. Made from robust light grey polypropylene, it offers long-lasting performance and resistance to environmental factors. This shutter opens automatically when airflow is present, enabling passive ventilation without manual control. It is intended to be mounted separately from the fan — ideally downstream — making it an effective and convenient solution for controlled air movement in ducted applications.