The Elta 064‑0630‑C is a 630mm louvre shutter designed for efficient passive airflow management in ventilation systems. Manufactured from robust light grey polypropylene, it offers strong resistance to environmental factors and wear. The shutter opens automatically in response to airflow, eliminating the need for manual operation. It is intended for independent mounting — ideally downstream of the fan — making it a practical and reliable solution for enhancing ventilation performance.