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Cased Axial Fans - Three phase
The Helios HRFD three phase fan range are cased axial flow fans with drilled flanges for connecting to circular ducting. These are a popular choice for systems that require a high airflow and a moderate pressure. Suitable for indoor or outdoor use as they are IP55 and have a galvanised steel casing. These fans can be reversed to give approximately 70% volume in the opposite direction to the original flow. HRFD fans are three phase models / 400v / 50 Hz.