The Helios VARW 225/4 is a high-pressure in-line pipe fan designed for efficient airflow in ducted systems. It is constructed with a cylindrical pipe housing made from galvanized sheet steel, featuring flanges on both ends in accordance with the DIN 24155 bolt pattern standard. An integrated guide wheel enhances the aerodynamic performance of the unit.
The fan includes a semi-axial impeller with eight spatially curved blades made of robust thermoplastic material. This directly driven fan is built to deliver reliable operation in demanding ventilation setups, combining durable construction with effective airflow handling.