Spiro-SAFE silencer diameter 500 mm - length 1200 mm (100 mm insulation)

Spiro-SAFE Sound Attenuator Diameter 500 mm - Length 1200 mm (100 mm insulation)

The Spiro-SAFE sound attenuator diameter 500 mm - length 1200 mm (100 mm insulation) is a round ventilation sound attenuator made from galvanized steel, specifically designed for use in ventilation and air handling ducts. This attenuator is engineered to effectively reduce noise generated by airflow and mechanical fans, ensuring sound levels in occupied spaces and technical rooms remain within acceptable limits.
The attenuator connection features male ends (insertion ends) on both sides, each equipped with an integrated double EPDM lip seal, providing an airtight and reliable connection with round ventilation ducts.

Practical Information

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

The outer casing is constructed from high-quality galvanized steel to ensure durability and reliability, resulting in a robust and corrosion-resistant finish.

The design is sturdy and functional, with a strong outer casing resistant to mechanical stresses during installation and operation. The product code clearly indicates the attenuator type, insulation thickness, duct diameter (Ød1), and attenuator length, making it easy to select the right attenuator for any ventilation project—from residential buildings to complex commercial installations.

Why is the premium variant better than the standard version?

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, allowing the insulation to better conform to the interior shape of the attenuator and providing more uniform sound attenuation.
2. Central Core: For diameters from 315 mm upwards, premium attenuators feature a central core. The core directs airflow through a perforated inner tube, increasing the contact of sound waves with the absorbent layer. This particularly enhances attenuation of mid and high frequencies.
3. More Uniform Sound Reduction: The combination of flexible insulation, excellent sealing, and thoughtful construction ensures the premium version delivers a more consistent sound reduction over a broad frequency range. The standard version may exhibit slightly less uniform attenuation, especially at lower frequencies.