Advanced FlowPath™ control with PowerStream® airflow straighteners. PowerSteam® air straighteners, standard equipment on RAMFAN EX and GX models, produce a powerful, straight, focused beam of air; allowing the fan to be set back further from a structure’s entrance without sacrificing PPV performance. Powerstream® technology offers superior ventilation with fan position flexibility, less equipment clutter and reduced noise inside the structure. The PowerStream FlowPath™ penetrates deeper through the structure, rapidly removing smoke and heat out the exit point. • PPV with PowerStream® Air Straighteners for fire rescue fans up to 21 in/54 cm. • PPV with PowerStream is like going from a fog nozzle to straight bore. This allows setback distances to increase five fold. • Both PowerStream and conventional fans can operate in close range of the door. • Only PowerStream fans can be set back as far as 18 ft (5.4 m) and be equally effective.