The mounting box is extremely convenient and the price is just under 7 including shipping just fine. Using the supplied flange various installation possibilities are given. The supplied dust cover is handy if the adapter to the front panel is to be mounted upwards, for example, when installed in the center console. However, water protection, it provides no. That also accompanied screws and squeezable flat connector is very positive.
Now, to the detriment of the product: As I opened one of my two adapters out of curiosity, I noticed that the relatively massive storage coil of the switching converter and a large capacitor have no mechanical fixation other than the solder joints. The vibrates in the vehicle with time, since the solder is not flexible. Something Pattex or hot glue would be enough here, but was saved.