Regenerative Blower, Phase Three, Output Power 1.5 hp, Maximum Operating Pressure 63 in Hg, Maximum Flow Rate 127 cfm, Maximum Vacuum 59 in wc, Voltage 190 to 220/380 to 415V, 208 to 230/460V, Inlet Size 1 1/2 in, Inlet Type NPT, Outlet Size 1 1/2 in, Outlet Type NPT, Frequency 50 Hz, 60 Hz, Housing Material Aluminum