Large Novenco ZerAx axial fan shown up close with its impeller blades

Photo: Mariusz Młynarczyk / CloudAir.tech

A staff member rests a hand on one of the impeller blades inside the casing of a large galvanised axial fan while talking to a visitor. Green lettering on the housing reads "ZerAx®" and "MOST EFFICIE...", marking the fan on the Novenco exhibit.