We are offering sr069 twin lobe blower.Model:- SR069 Gear Centre mm.:- 117 Swept Vol.Per Rev.lit/rev.:- 6.9 Air Flow m3/hr.:- 330-1250 Max.Pressure m bar.:- 1035 Max.Speed rpm. 3500 ALL BLOWERS ARE SUTABLE FOR OPERATION AS EXHAUSTERS FOR DEPRESSIONS OF UP TO 500mbar.