400°C / 2 h fire resistance Fire classification: A1 (M0)
Effective over a wide frequency range (ISO 7235)
Aerodynamic (optimized pressure loss) and robust
With spread metal sheet
A1
Custom-made
In several elements
50 – 100 – 150 – 200 – 300 mm
SONIE BD
- Rectangular
- 400°C / 2 h certified acoustic baffle for smoke exhaust applications
Description
The SONIE BD is an acoustic baffle specifically designed for smoke exhaust applications and HVAC ductwork systems exposed to demanding aerodynamic and thermal conditions. It provides effective noise attenuation while offering a 400°C / 2 h fire resistance rating.
Its expanded metal erosion protection allows air velocities of up to 20 m/s within the ductwork. SONIE BD acoustic baffles are particularly well suited to smoke exhaust applications such as car parks, tunnels, and other fire safety ventilation systems.
Characteristics
- Grooved galvanized steel frame
- Rounded-edge aerodynamic profile
- Expanded metal erosion protection
- Assembly by zinc-plated steel rivets or clips
- Non-hygroscopic monobloc mineral wool insulation
- Density: 40 kg/m³ ±10%
- Insulation fire classification: A1 (M0)
- Fire resistance: 400°C / 2 h
- Anti-fibre glass veil protection on both faces
- Available thicknesses: 50 / 100 / 150 / 200 / 300 mm
Performances
Acoustics
- Tested by an independent laboratory in accordance with EN ISO 7235
- Excellent sound attenuation over a wide frequency range
Pressure loss
- The rounded aerodynamic frame profile can reduce pressure losses by up to 30% compared with a straight-edge profile in certain configurations
Mechanical strength
- High-strength steel frame ensuring stability, durability, and proven mechanical resistance
- Expanded metal erosion protection allowing air velocities up to 20 m/s within the ductwork
Fire resistance
- Certified 400°C / 2 h according to test report
Applications
- Smoke exhaust systems
- High-temperature ventilation systems
- Technical rooms
- Industrial facilities
- Systems exposed to high air velocities
- Acoustic treatment of fire safety ventilation systems
- Tunnels
- Marine applications
- Energy facilities
Options
Materials
- Stainless steel 304L or 316L
- Aluminium
Sheet thicknesses
- 0.8 mm
- 1.0 mm
- 1.2 mm
- 1.5 mm
Specific options
- Frame drainage holes
- Upper and lower guide rails
- Reinforcements according to dimensions
- V-shape inlet profile or outlet profile
400°C / 2 h fire resistance Fire classification: A1 (M0)
Effective over a wide frequency range (ISO 7235)
Aerodynamic (optimized pressure loss) and robust
With spread metal sheet
A1
Custom-made
In several elements
50 – 100 – 150 – 200 – 300 mm
Technical datasheet of SONIE BD splitter
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