Single Inlet Backward Blade
The RSH ranges of SWSI fans, with backward 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 the RSH range have high efficiency, single width, single inlet
centrifugal impellers with backward inclined blades.
The RSH range covers 13 sizes from 250 up to 1000 mm nominal size.