I rated the extractor with three stars because: I cannot know whether the internal construction is a steel and aluminum alloy or if it is inox as they say. The finish is relatively good and one should be careful during installation to wear gloves so as not to get cut. It has not been tested yet under heavy cooking conditions, we will see below how effective it will be. What saddened me quite a bit and the reason for the three stars is that the bottom covers - filters that are visible and cover the extractor and include the aluminum filters, are made of plastic that seems very fragile and I believe that over time it will deteriorate and fade. Also, the speed selection and turbo switch is quite vague, it does not lock into any position. It gives the feeling of a potentiometer. And it says Bosch made in Germany.

The button of the extractor fan is very fake and does not lock between the 3 levels + the turbo it has, resulting in having to bend down to see what number you have set it to, as levels 2-3 do not have much difference between them