The fan (air inductor/exhaust fan) does not require ducts or screws for installation. The internal grille assembly fits onto the upper base and is bolted down to the height of the bus structure.

It operates at 12V and 24V depending on the current available in the vehicle. Together with the air renewal hatch, it constitutes the air renewal system, ensuring the exchange of fresh air from the outside and stale air into the vehicle.

According to technical regulations, it is necessary to guarantee a renewal rate of 13 m3/h per passenger, which, together with the flow rate of the inductor and/or hatch, determines the number of components to be installed for the number of passengers traveling in the vehicle.