Atlantic Blowers' AB-1000 Three Phase/Single Stage Regenerative Blower can be used for various pressure or vacuum applications. The AB-1000 produces a maximum flow of 399 CFM. The maximum pressure and vacuum is 248 inH2O and 158 inH2O respectively.The AB-1000 has a power output of 15 HP (11 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 37.0Î”/21.3Y. Measuring at a distance of 3 ft. the blower will produce a noise level of 80 dbA. The inlet/outlet connection size is 2.50" female NPT.