In summary, several performance characteristics should be taken into consideration when selecting the proper fan for an application. The true operating point, or Volumetric Flow rate from a fan is the result of both Static Pressure and System Resistance. A fan will operate at the point where the system resistance curve intersects the fan curve. In addition to these factors, the proper type of fan must be selected. ebm-papst offers a complete range of air moving products such as axial, backward curved impeller and forward curve centrifugal blowers that currently serve a wide variety of markets.