Back Draught Damper 315mm dia

The Systemair Back Draught Damper prevents air flowing back into a circular duct when the fan is off. It is made from galvanised sheet steel with two spring-loaded blades that open with airflow and close against back draught.Because the blades are spring-loaded, the damper can be mounted vertically as well as horizontally. Available from 100mm to 315mm diameter. 100mm to 315mm diameter Back draught damper Spring-loaded blades Suitable for Vertical and horizontal ducted ventilation systems Airflow control and fire protection Specifications Brand Systemair Type Back draught damper Damper shape Circular Blades Two spring-loaded blades Material Galvanised sheet steel Size range 100mm to 315mm diameter Mounting Vertical or horizontal Warranty 1 Year Manufacturer