Lindab axial fan, Harmann roof fan and Aereco jet fan in the Arena

Photo: Mariusz Młynarczyk / CloudAir.tech

A blue Lindab axial fan with warning labels sits in the foreground of the Arena Technologii showcase, next to a black Harmann roof fan with a red motor housing on a white plinth. A large black and galvanised Aereco fan and a beige roof fan stand further back on the maroon carpet.