FOR THE REDUCTION OF NOISE IN CIRCULAR DUCTS, FLEXIBLE ALUMINIUM CONSTRUCTION
Circular silencers, of a flexible aluminium construction, for the reduction of noise in the circular ducts of ventilation and air conditioning systems
- The sound absorbing material is non-combustible mineral wool with RAL quality mark, biosoluble and hence hygienically safe according to the German TRGS 905 (Technical Rules for Hazardous Substances) and EU directive 97/69/EC
- Casing and perforated inner duct made of aluminium
- Variant with spigot has a groove for a lip seal, suitable for circular connecting ducts to EN 1506 or EN 13180
- Insertion loss measured according to ISO 7235
- Casing air leakage to EN 15727, class D
Optional equipment and accessories
- Socket-type spigots on both ends
- Raised edges at both ends
- With lip seals on both ends