Regenerative Blower Phase Three Output Power 10 hp Maximum Operating Pressure 125 in Hg Maximum Flow Rate 425 cfm Maximum Vacuum 110 in Hg Voltage 190 to 220/380 to 415V 208 to 230/460V Inlet Size 2 1/2 in Inlet Type NPT Inlet Gender Female Outlet Size 2 1/2 in Outlet Type NPT Outlet Gender Female Frequency 50 Hz 60 Hz Housing Material Cast Iron