Swing-out Centrifugal fans, all with swing-out motor impeller unit. Simplifies maintenance & cleaning. Complies with the hygiene requirements of VDI 6022. Helios KV range for 1000 m³/h to 8000 m³/h volume. Expanded product range of the proven swing-out version. High performance centrifugal impellers with high efficiency. Uncritical in extraction of polluted air. For universal use in commercial and industrial applications.