The Helios FK-EV 200/100 is a 90-degree end piece specifically designed to connect 200 x 50 mm flat ducts to DN 100 mm disc valves. Crafted from corrosion-resistant galvanized steel, it forms part of Helios’ underfloor duct system optimized for residential ventilation. This robust and low-profile component enables seamless integration into concealed air distribution setups, making it ideal for modern construction and renovation projects.