The Helios FK‑T 150÷200÷200 is a flat duct T‑piece constructed from galvanized steel sheet, featuring two outlets sized 150 x 50 mm and one outlet sized 200 x 50 mm. It is part of the underfloor duct system specifically developed for domestic ventilation applications. The system offers a rigid, corrosion-resistant flat design with external connecting sleeves that provide smooth internal walls, reducing flow resistance and preventing dirt accumulation. This T‑piece is ideal for concealed air duct installations and efficient air distribution in modern building projects.