Spiro-SAFE silencer diameter 125 mm - length 900 mm (50 mm insulation)

Spiro-SAFE sound attenuator diameter 125 mm - length 900 mm (50 mm insulation)

The Spiro-SAFE sound attenuator diameter 125 mm - length 900 mm (50 mm insulation) is a circular sound attenuator made from galvanized steel, available in various diameters and lengths, used in ventilation and air handling systems to reduce noise transmission through ductwork. This attenuator is designed to effectively dampen noise from fans and airflow, ensuring that sound levels in occupied spaces remain comfortable. It can be directly integrated into ventilation ducts and is suitable for both residential and commercial buildings.

Practical information

Sound absorption in the Spiro-SAFE sound attenuator diameter 125 mm - length 900 mm (50 mm insulation) is achieved through mineral wool positioned between the inner and outer casing. Depending on the design, the wool thickness is either 50 mm or 100 mm. The mineral wool complies with fire classification A1 according to EN 13162, meaning the material is fully non-combustible.

The outer casing is manufactured from high-quality galvanized steel to ensure durability and reliability, resulting in a robust and corrosion-resistant finish. The construction of the standard attenuators is solid and functional. The walls are firmly shaped and resistant to mechanical stress during installation and use. This guarantees a long service life, excellent noise reduction performance, and reliable operation in a wide range of ventilation projects.

Thanks to its circular shape and smooth interior, the sound attenuator causes low pressure losses within the ventilation system. This is important to prevent fans from being overburdened or consuming additional energy. The attenuator can be used in both supply and exhaust air ducts.

Why is the premium variant better than the standard variant?

The premium sound attenuator offers several advantages over the standard version, making it better suited for certain applications:

1. Wool thickness: The premium sound attenuator uses 100 mm thick mineral wool, cut from rolls. This allows the insulation to better conform to the internal shape of the attenuator, providing more uniform sound attenuation.
2. Central core: From diameter 315 mm upwards, the premium attenuators come with a central core. This core ensures air flows through a perforated inner tube, allowing sound waves to have more contact with the absorption layer. This particularly enhances attenuation of mid and high frequencies.
3. More uniform sound reduction: The combination of flexible insulation, tight fitting, and thoughtful construction ensures the premium variant provides a more consistent noise reduction across a wide frequency range. The standard variant's noise reduction may be slightly less uniform, especially at lower frequencies.