Noise-attenuating bend with 50 or 100 mm noise-absorbing mineral wool or synthetic filling. The silencer consists of a perforated inner duct connected with gasketed duct fittings and a galvanized steel casing. The space between the perforated duct and the casing is filled with sound-absorbing material.
- Sound-absorbing material:
- NRFV – Mineral wool (fire resistance class EI60)
- NRPV – Synthetic (Cleanliness Classification M1)
- Standard dimensions: Ø100-315 mm
