O.Erre roof and duct fans displayed beside the Hall 15 sign

Photo: Mariusz Młynarczyk / CloudAir.tech

O.Erre roof fans and a galvanised square fan unit occupy the foreground, with in-line mixed flow duct fans and wall fans mounted along the grey wall. The backlit 'REVOLUTIONARY SYSTEM' banner runs overhead, and the 'Padiglione Hall 15' sign hangs at the far end.