Blauberg Silencer 125mm x 600mm

Blauberg Silencer SD 125/600 - Round Duct Noise Attenuator
Optimise your ventilation system’s comfort and performance with the Blauberg Silencer SD 125/600 . Engineered for attenuation of duct-borne noise, it works in tandem with sound-insulated fans to deliver whisper-quiet airflow in residential, commercial and light-industrial settings.
Robust Construction for Lasting Performance
Galvanised steel casing resists corrosion and mechanical damage
Filled with non-flammable mineral wool and covered to prevent fiber release
Rubber-sealed flanges ensure airtight connections and eliminate leaks
Available in multiple lengths to suit diverse duct runs
Superior Acoustic Absorption
Featuring a perforated inner core and 50 mm acoustic lining, the SD 125/600 silencer delivers targeted noise reduction where it matters most. Peak attenuation reaches 15 dB at 500 Hz and 28 dB at 1 kHz, dramatically lowering fan whine and HVAC hum without impeding airflow.
Easy Installation & Flexible Placement
Mounts directly to 125 mm round ducts using standard clamps
Any orientation: vertical, horizontal or angled
Ideal downstream of fans, heat-recovery units or AHUs
For enhanced noise control, install additional silencers in series at the inlet or outlet
Technical Specifications
Connection diameter: 125 mm
Overall length: 600 mm
Flange width (L1): 50 mm
Casing material: Galvanised steel
Acoustic fill thickness: 50 mm mineral wool
Weight: 2.7 kg