Atlantic Blowers' AB-1702 Three Phase/Double Stage Regenerative Blower can be used for various pressure or vacuum applications. The AB-1702 produces a maximum flow of 812 CFM. The maximum pressure and vacuum is 58 inH2O and 88 inH2O respectively.The AB-1702 has a power output of 20 HP (15 kW) with speeds of either 3000 or 3600 RPM (50/60 Hz dual frequency). The voltage is 220-275Î”/380-480Y with an FLA rating of 51.5Î”/29.8Y. Measuring at a distance of 3 ft. the blower will produce a noise level of 84 dbA. The inlet/outlet connection size is 4.00" female NPT.