Mineral wool ventilation aperture silencer SORDO

Sound attenuators for circular ducts 50 mm mineral wool Air tightness class D M1 classified Built for a low CO2 footprint Excellent noise attenuation Low pressure drop Fire-resistance class EI30 to EI120* SORDO-A is part of Swegon’s RE:3 concept based on the key principles of circularity, and which consists of RE:duce, RE:use and RE:vitalise. SORDO-A is made with sustainable sheet metal called RRP, where RRP stands for “recycled and renewably produced”. The steel has a recycled steel content of at least 75 per cent. In addition, the manufacturing process uses electric arc furnaces that run on 100 per cent renewable energy. A circular sound attenuator with circular connection spigots. Made from recycled galvanised steel sheet for environmental class C3 (equivalent to M2 for AMA VVS2016) Sound attenuating materials: 50 mm thick mineral wool, covered with special polyester fabric Fibre migration-secured thanks to our solution with self-supporting surface layer, approved with regard to cleaning, fibre migration, ageing resistance, emissions, etc. The connection spigots are fitted with rubber seals The product can be mounted by means of approved hangers that satisfy the provisions to load bearing capacity rating R corresponding to the fire resistance the structural element of the building, for example load bearing capacity rating R 60 for elements of structure to fire-resistance class EI60. The connection spigots on this product are designed for connection to ducts only. It is important to drive screws or blind rivets into the sheet-metal edge on the connection spigot.