Regenerative Blower, Phase Single, Output Power 2.5 hp, Maximum Operating Pressure 65 in Hg, Maximum Flow Rate 157 cfm, Maximum Vacuum 60 in wc, Voltage 110/220 to 240V, 115/208 to 230V, 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