KDD Series


Centrifugal Extractor Fan



  • Double inlet low pressure centrifugal direct drive fans fitted with forward curved impellers with sizes 7 to 15 inches and capacities up to 10000m³/h.
    Static pressure up to 450 Pa.
  • It can be incorporated either in air conditioning equipment and air handling units or within cabinet or centrifugal air heaters.
  • They can also be mounted with commercial cooker hoods.
  • The series is suitable to use in clean rooms.


  • Constructed in galvanised electro welded sheet.


  • The KDD series is fitted with induction asynchronous motors with squirrel cage rotor in die cast aluminium according to IEC 34-1.  
  • The motor is directly mounted to the fan casing
    • 230V 30Hz single-phase with permanent capacitor or 220/380V 50Hz three-phase.
    • IP10
    • Class B
    • Thermal overload protection in the windings


  • The forward curved impellers are manufactured in galvanised sheet steel and dynamically balanced in accordance with ISO 1940

Technical Data 

Model Size  m3/hr W Kg
KDD7/7-4-1 7/7 1800 165 1.25 9
KDD9/7-4-1 9/7 2160 350 3.6 14