Single Inlet Forward Blade
The ASH ranges of SWSI fans, with forward inclined blades, are a modular development of the
well-known ADH and RDH ranges of DWDI fans with square-outlet scrolls.
Fan sizes and dimensions are still from the R20 normal number series, in accordance
to AMCA Standard 99-0098 76 and to DIN 323.
The ASH fans have single width, single inlet centrifugal impellers with forward
The ASH range is based on 15 sizes, from 200 up to 1000 mm of wheel diameter.