The Helios FR 180 is a circular flange designed for connecting Helios fans with a 180mm flanged outlet to matching ductwork or flexible connectors. Precision-engineered to align with the hole pattern of circular flanged fans, this flange ensures a secure and airtight connection. Suitable for use in ventilation systems requiring a robust interface between fans and round ducts, the FR 180 provides reliable installation and compatibility. Part of a broader range, this model supports systems from 180 mm to 710 mm in diameter.