250-600-50 round silencer NRF (50 mm insulation), ETS NORD
€115.20 TTC
€95.21 HT
The NRF 50 250/600 ETS NORD round duct silencer, 600 mm in length with 50 mm sound insulation, is an essential component for ventilation systems, ensuring effective noise attenuation. Suitable for 250 mm air ducts, these innovative silencers provide excellent airflow performance and are used to reduce noise from various sources in ventilation systems, such as fans, heat recovery units, or terminal blocks.
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The ETS NORD NRF 250-600-50 round silencer is designed for 250 mm ventilation ducts, offering exceptional noise reduction with minimal impact on airflow. Featuring 50 mm mineral wool sound absorption, a perforated inner tube, and galvanized steel outer shell, it ensures durability and high performance. A fabric lining between the tube and insulation prevents particle migration into the duct system.
This 250 mm duct silencer meets airtightness class D and, with its factory-fitted rubber gasket, guarantees secure, leak-free connections to reduce pressure loss. Ideal for residential, office, and commercial HVAC systems, it effectively attenuates fan noise, regeneration sounds, and terminal unit noise.
Compact and easy to install without sealants or adhesives, the NRF 250-600-50 mineral wool duct silencer is perfect for both new installations and retrofits. For enhanced performance, multiple units can be installed in series.
The most effective noise reduction is achieved when the silencer is installed directly behind the fan or a duct elbow.
Technical information:
Connection diameter (d) Ø (mm): 250
Diameter “d1” (mm): 350
Length “L” (mm): 600
Insulation thickness (mm): 50
Weight (kg): 8.6
Fire resistance class: EI15, EI60
Material: Galvanised steel sheet, mineral wool
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