The Helios VS 40/20 is a flexible duct connector engineered to minimize structure-borne noise and accommodate minor installation deviations. Featuring double-sided flanges made from galvanized sheet steel, it provides robust and corrosion-resistant mounting to duct fans or components. The central section consists of a high-quality elastic fabric sleeve that effectively dampens vibration and helps absorb movement, ensuring a quiet and stable connection within ventilation systems.