Sectioned Mietzsch roof fan revealing its impeller and terminal box

Photo: Mariusz Młynarczyk / CloudAir.tech

A grey roof fan with a cut-away housing sits on a white plinth, exposing the backward-curved impeller, motor mount, cable glands and a "Start" switch. A Mietzsch rating plate is fixed to the hood, and another grey fan stands behind against the blue-and-white stand graphics.