Siemens ELMO-G 2BH1800-7AK12 2.5" Regenerative Vacuum Blower 8.4Hp 230/460V 3PH

In Good Used Condition.  Removed from a Working Environment. Tested @ 460V.
2.5" threaded inlet/outlet ports.
6.3kW /8.44Hp 230/460V 3PH.
19.5" Blower OD.
I was not able to find specs for this exact model but I have found one that appears to be very close.
According to how I am reading this, the unit has a capacity of about 6.5 m3 /min (230CFM) at 275 mbar (4 PSI).