Range of rectangular duct fans suitable for many general ventilation applications where the fan is required to be installed within a rectangular ducted ventilation system or where the space for installation is limited.
High performance centrifugal fans.
All models suitable for mounting in any orientation.
Casing manufactured from heavy gauge galvanised sheet steel.
Direct drive backward curved impellers manufactured from aluminium sheet.
External rotor motor, Class F insulation with thermal protection.
Remote terminal box.

Motor and impeller fitted on the inspection cover enabling easy cleaning and maintenance.
– IRB models: Single-phase 230V-50Hz.
IP44* or IP54. Speed controllable by transformer.
– IRT models: Three-phase 230/400V-50Hz.
IP54. Speed controllable by transformer or frequency drive.

* IP44: 2-180, 2-200, 4-225 and 4-315 A


  • IRB-IRTbdp506

    Inspection door
    Inspection door that facilitates maintenance.

  • IRB-IRTbdp487

    Versatile design
    Can be installed in any position.

  • IRB-IRTbdp481

    Centrifugal backward curved impeller
    To prevent accumulation of dirtiness. Dynamically balanced.

  • IRB-IRTbdp531

    IP55 remote terminal box
    To ease installation and maintenance and connection to external controls.


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