The Helios Fans RSD 450/800 is a high-quality inline duct silencer engineered for noise reduction in ventilation systems. Its sturdy housing is constructed from galvanized sheet steel, ensuring long-term durability and resistance to corrosion. Internally, it features a high-grade mineral wool lining that effectively dampens sound, while a fleece layer on the airflow side protects against fiber abrasion and contamination.
With dimensions and a mounting hole pattern tailored to standard fan diameters (R 20) in compliance with DIN 24155, this silencer ensures easy and secure integration into existing ductwork. Designed for minimal flow resistance, the RSD 450/800 is ideal for maintaining both acoustic performance and ventilation efficiency in commercial and industrial HVAC applications.