Atlantic Blowers' AB-1202 Three Phase/Double Stage Regenerative Blower can be used for various pressure or vacuum applications. The AB-1202 produces a maximum flow of 399 CFM. The maximum pressure and vacuum is 313 inH2O and 189 inH2O respectively.The AB-1202 has a power output of 23.2 HP (17.3 kW) with speeds of either 3000 or 3600 RPM (50/60 Hz dual frequency). The voltage is 220-275Δ/380-480Y with an FLA rating of 76.0Δ/44.0Y. Measuring at a distance of 3 ft. the blower will produce a noise level of 81 dbA. The inlet/outlet connection size is 2.50" female NPT.