The Elta 019‑0315-STD is a flanged damper designed to stop reverse airflow when the fan is not in use, ensuring effective system performance and airflow control. Measuring 315mm in diameter, it attaches directly to the fan’s case flange for a secure and straightforward installation. Constructed from hot dip galvanised steel, the damper offers excellent resistance to corrosion. It features galvanised steel butterfly-type blades for reliable operation. This model is suitable for both horizontal and upward vertical airflow installations, making it a versatile choice for various ventilation setups.