The Helios VARW 280/4 is a high-pressure in-line pipe fan built for effective air movement in ducted ventilation systems. Its cylindrical housing is constructed from galvanized sheet steel and includes flanges on both ends, following the DIN 24155 standard for hole pattern alignment. A built-in guide wheel supports smoother and more efficient airflow through the fan.
This model features a semi-axial impeller with eight spatially curved blades made from durable thermoplastic. The fan is directly driven and designed to deliver consistent performance in demanding industrial and commercial ventilation environments.