Centrifugal Fan - ATZAF FF

ATZAF FF (Double width double inlet airfoil housed fan)


  • Steel impeller with 10 (x2) Airfoil blades, continuously welded. Wheel diameters range from 12” to 49”.
  • Galvanized inlet cone with Forefinger (patented) and housing.
  • Housing spot welded up to size 18’’, with Pittsburgh closure from size 20”
  • Low maintenance ball or roller bearings
  • Impeller with shaft statically and dynamically balanced at G 2.5
  • Trapezoidal cut-off


  • Suitable for applications up to 13.5” WG SP and volumes to 130,000 CFM
  • Peak efficiencies over 80%
  • Easy interchangeability with ATLI models thanks to standardized dimensioning.


  • Increased airflow and pressure: for a required volume and pressure the fan can run at lower rpm or can be selected smaller
  • More uniform flow at the fan outlet for improved filter and coil efficiency
  • Wider working range with high efficiency
  • Significant reduction of noise, especially in the low frequencies