The Helios FR 250 is a robust flange designed to connect circular flanged fans to round ducting systems. Manufactured to match the diameter and bolt pattern of circular flanged fans, it allows secure attachment using a flexible connector or direct duct match. This galvanized steel flange is part of a comprehensive range available in sizes from 180 mm to 710 mm, ensuring compatibility across various ventilation setups. Ideal for efficient and stable airflow connection in commercial or industrial systems.