The Helios FK‑B 150 is a mounting bracket designed specifically for the FK 150 flat duct system. Manufactured from galvanized sheet steel, this bracket ensures secure and stable installation within underfloor duct systems. The flat duct system features a rigid and corrosion-resistant design that is non-combustible. The bracket supports connections using external sleeves, which maintain smooth inner walls, ensuring low flow resistance and minimizing dirt buildup for efficient airflow.