The Helios KWL-ÜS 2600 S is a symmetrical transition piece used to connect the KWL EC 2600 S ventilation unit to round pipe systems. It features a flange diameter of 560 mm and includes four screws for easy and secure installation. Manufactured from galvanized sheet steel, this durable adapter ensures a reliable and efficient connection in ventilation ductwork. The total installation length is 370 mm, providing a practical and effective solution for duct transitions.