The Helios Fans RSD 250/600 is a high-performance duct silencer built to reduce noise in air ventilation and duct systems. It features a durable galvanized sheet steel housing for long-lasting performance and is internally lined with premium mineral wool for effective sound absorption. To ensure durability and prevent fiber erosion, the airflow-facing surface is protected with an abrasion-resistant fleece layer.
Designed for easy integration, the unit’s dimensions and mounting hole pattern conform to standard fan diameters (R 20) and follow DIN 24155 specifications. With its excellent noise-reducing properties and exceptionally low flow resistance, the RSD 250/600 is an ideal choice for maintaining quiet and efficient airflow in HVAC installations.