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Blauberg SDF 150/900

Flexible silencer for round duct.
EAN codeEAN4058448035197
  • Description
  • Characteristics
  • Downloads
  • Dimensions
  • Designation key
  • Noise level reduction
  • Pressure drop diagram

For attenuation of noise produced by a ventilation system and spreaded along ventilation ductworks. Used jointly with sound-insulated fans in premises with high requirements to noise level produced by ventilation equipment. Compatible with Ø 100 mm up to 315 mm round air ducts.


Fixing to round ducts with clamps. Any mounting position. For better sound absorption install the silencers in series. Fixing on both ends and in the middle to prevent sagging.


Consists of outer and inner flexible spiral seam air ducts made of aluminium alloy and filled with non-flammable sound-absorbing material. Internal surface is perforated and covered with protection coating to prevent fiber blowing-out. A great variety of standard ranges with several length options.

Parameter SDF 150/900 Measurement unit
Weight 3.1 kg
Length 900 mm
Casing material aluminium -
Air duct for round air ducts -
Connection diameter 150 mm
Documents archieve
Documents archieve
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SDF (round) - data sheet (pdf 402.96Kb)
SDF 100/125/150 (round) - image (png 443Kb)

Model Overall dimensions [mm]
Ø D Ø D1 L L1
 SDF 150/900 149 270 900 55
Designation key
Designation key
Series Connected air duct diameter [mm]   Length
SDF 100; 125; 150; 160; 200; 250; 315 / 600; 900; 2000
Noise level reduction
Noise level reduction
Model 63 Hz 125 Hz 250 Hz 500 Hz 1000 Hz 2000 Hz 4000 Hz 8000 Hz
SDF 150/900 4 8 14 40 48 49 26 25
Pressure drop diagram
Pressure drop diagram

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