Roof filter fans and roof exhaust filters are used in enclosures from which warm air must be diverted due to
increased heat development. The ready-to-connect and low-noise roof filter fan is used to expel warm air from
within the enclosure. Alternatively, the roof exhaust filter provides passive ventilation. The RFP 018 series comes
in two versions: one utilizes four small axial fans, improving reliability and maintaining continuous operations
even if one of the fans should fail; the second uses a larger single high capacity fan.
The hose-proof hood is designed to increase the protection class and serves as a protective cover for filter fans,
intake and exit filters, e.g. for the series FPI 018, FPO 018 and FF 018. It is used for protection against water
projected by a hose and extreme climatic influences if located outdoors or in industrial applications with harsh
environmental conditions. In order to clean the filter fans or to change the filter mat, the hood can easily be
removed, the cabinet does not need to be opened (safety risk).
