Spiro-SAFE premium silencer diameter 355 mm - length 1200 mm with core (100 mm insulation) without plug connections

Spiro-SAFE premium silencer diameter 355 mm - length 1200 mm with core (100 mm insulation)

The Spiro-SAFE premium silencer diameter 355 mm - length 1200 mm with core (100 mm insulation) is a round ventilation silencer made from galvanised steel, specifically designed for use in ventilation and air handling ducts. This silencer is engineered to effectively reduce noise generated by airflow and mechanical fans, ensuring that noise levels in occupied spaces and technical rooms remain within acceptable limits.
The silencer is fitted on both ends with a male connection (spigot) incorporating an integrated double EPDM lip seal, providing an airtight and reliable connection to round ventilation ducts.

Practical information

Sound absorption is achieved through glass wool, located between the inner and outer casing of the silencer. Depending on the model, the wool thickness is 50 mm or 100 mm for the PREMIUM-100 version. The mineral wool is flexible and cut from roll material, allowing it to conform closely to the silencer’s shape and ensuring uniform noise reduction along the entire length of the product. This delivers consistent attenuation even with variable airflow and smaller duct sizes.

The outer casing is made from high-quality galvanised steel to guarantee durability and reliability, providing a robust and corrosion-resistant finish.

The construction is sturdy and functional, with a solid outer shell capable of withstanding mechanical stress during installation and operation. The product code clearly indicates the type of silencer, insulation thickness, duct diameter (Ød1), and silencer length. This makes it easy to select the appropriate silencer for any ventilation project, ranging from residential applications to complex commercial buildings.

Why is the premium variant better than the standard variant?

The premium silencer offers several advantages over the standard silencer, making it more suitable for specific applications:

1. Wool thickness: The premium silencer uses 100 mm thick mineral wool cut from rolls. This allows the insulation to better adapt to the inner shape of the silencer, resulting in more uniform sound attenuation.
2. Central core: Starting from diameter 315, premium silencers feature a central core. This core directs air through a perforated inner tube, increasing the sound waves’ contact with the absorption layer. This is especially effective for attenuating mid and high frequencies.
3. More uniform sound reduction: The combination of flexible insulation, a secure connection, and a well-thought-out design ensures the premium variant provides a more consistent noise reduction across a wide frequency range. The standard variant may exhibit slightly less uniform attenuation, particularly at lower frequencies.