400°C / 2 h fire resistance Fire classification: A2-s1,d0 (M0)
High attenuation, optimized low-frequency performance (ISO 7235)
Aerodynamic (optimized pressure loss) and robust
Easy installation, lighter weight and improved handling resistance
SONIE BD+
- Rectangular
- High-performance acoustic baffle for 400°C / 2 h smoke exhaust applications
Description
The SONIE BD+ is a high-performance acoustic baffle specifically designed for smoke extraction applications and HVAC ductwork systems exposed to demanding aerodynamic and thermal conditions. It provides effective noise attenuation while offering a 400°C/2h 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 extraction applications such as car parks, tunnels, and other high-velocity ventilation systems.
Characteristics
- Grooved galvanized steel frame
- Rounded aerodynamic profile
- Expanded metal erosion protection
- Riveted or clipped assembly
- Monobloc mineral wool insulation
- Density: 24 kg/m³ ±10%
- Fire classification: A2-s1,d0 (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
- Acoustic attenuation up to +15 dB on low frequencies compared with standard insulation
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
ailing-edge profile
400°C / 2 h fire resistance Fire classification: A2-s1,d0 (M0)
High attenuation, optimized low-frequency performance (ISO 7235)
Aerodynamic (optimized pressure loss) and robust
Easy installation, lighter weight and improved handling resistance
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