High Pressure Regenerative Blower Phase Three Output Power 20 hp Maximum Operating Pressure 139 in wc Maximum Flow Rate 755 cfm Maximum Vacuum 110 in wc Voltage 230/460V AC Inlet Size 4 in Inlet Type MPT Inlet Gender Female Outlet Size 4 in Outlet Type NPT Outlet Gender Female Current Rating 48/24 A Frequency 60 Hz Housing Material Aluminum