Atlantic Blowers' AB-402/1 Single Phase/Double Stage Regenerative Blower can be used for various pressure or vacuum applications. The AB-402/1 produces a maximum flow of 113 CFM. The maximum pressure and vacuum is 138 inH2O and 110 inH2O respectively.The AB-402/1 has a power output of 3 HP (2.2 kW) with speeds of either 3000 or 3600 RPM (50/60 Hz dual frequency). The voltage is 110-120Î”/220-240Y with an FLA rating of 23.0Î”/11.4Y. Measuring at a distance of 3 ft. the blower will produce a noise level of 69 dbA. The inlet/outlet connection size is 1.50" female NPT.