Atlantic Blowers' AB-800 Three Phase/Single Stage Regenerative Blower can be used for various pressure or vacuum applications. The AB-800 produces a maximum flow of 399 CFM. The maximum pressure and vacuum is 130 inH2O and 125 inH2O respectively.The AB-800 has a power output of 8.5 HP (6.3 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 24.0Î”/12.0Y. Measuring at a distance of 3 ft. the blower will produce a noise level of 79 dbA. The inlet/outlet connection size is 2.50" female NPT.