The Helios Fans SRSD 400/600 is a reliable and efficient silencer designed to minimize noise in circular duct ventilation systems. Ideal for installation between the fan and the ventilated area, this unit effectively dampens sound without impeding airflow.
Equipped with integrated spigots, it allows for quick and easy installation into standard circular ducting. As the largest model in a range of 9 diameters (100 mm to 400 mm), the SRSD 400/600 is suitable for high-capacity HVAC systems where noise control is critical for maintaining a comfortable environment.