Spiro-SAFE silencer diameter 160 mm - length 900 mm (50 mm insulation)

Spiro-SAFE sound attenuator diameter 160 mm - length 900 mm (50 mm insulation)

The Spiro-SAFE sound attenuator diameter 160 mm - length 900 mm (50 mm insulation) is a round sound attenuator, a ventilation fitting made from galvanized steel, available in various diameters and lengths, used in ventilation and air handling systems to reduce noise transmission through air ducts. The attenuator is designed to effectively dampen fan and airflow noise, ensuring a comfortable noise level in occupied spaces. It can be directly integrated into ventilation ducts and is suitable for both residential and commercial buildings.

Practical information

The sound absorption of the Spiro-SAFE sound attenuator diameter 160 mm - length 900 mm (50 mm insulation) is achieved by mineral wool located between the inner and outer casing. Depending on the version, the wool thickness is either 50 mm or 100 mm. The mineral wool complies with fire class A1 according to EN 13162, meaning the material is completely non-combustible.

The outer casing is made of high-quality galvanized steel to ensure durability and reliability, providing a robust and corrosion-resistant finish. The construction of the standard attenuators is sturdy and functionally designed. The walls are firmly shaped and resistant to mechanical stress during installation and use. This results in a long service life, excellent performance in noise reduction, and reliable operation across a variety of ventilation projects.

Due to its round shape and smooth inner surface, the sound attenuator causes low pressure losses in the ventilation system. This is important to prevent fans from being overloaded or consuming additional energy. The attenuator can be applied 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 model, 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 attenuator’s inner shape, providing more consistent sound attenuation.
2. Central core: From diameter 315 mm upwards, the premium attenuators feature a core in the centre. This core directs the air through a perforated inner tube, increasing the contact of sound waves with the absorbent layer. As a result, mid and high frequencies are particularly more effectively dampened.
3. More uniform noise reduction: The combination of flexible insulation, precise fitting, and thoughtful construction ensures that the premium variant delivers more consistent noise reduction across a wide frequency range. The standard variant may exhibit slightly less uniform attenuation, especially at lower frequencies.