The Elta 019‑0400-STD flanged damper is a 400mm unit built to block reverse air movement when a fan is not in operation, supporting efficient airflow management. Designed for direct attachment to the fan case flange, it simplifies installation while maintaining a secure fit. Manufactured from hot dip galvanised steel, the damper offers strong resistance to corrosion and wear. It features butterfly-type blades made of galvanised steel for dependable performance. This model supports both horizontal and vertical (upward airflow) mounting positions, making it adaptable for various ventilation system designs.