The Helios FR 710 is a circular flange designed for connecting flanged fans to round ductwork. Crafted from galvanized steel, it ensures a secure and durable attachment, with precise alignment to the fan’s diameter and bolt pattern. The flange features a spigot that accommodates both flexible connectors and standard circular ducts. As the largest in a series of ten flange sizes (ranging from 180 mm to 710 mm), the FR 710 offers robust compatibility for high-capacity ventilation systems. Ideal for commercial or industrial HVAC applications where secure and efficient airflow transitions are essential.