Regarding the housing, assemble it with the rpi to avoid putting the pieces of the housing upside ^^ Once joined, I realized that there was a protective film on each piece. A tip if you have a camera for rpi, the lid has all holes made to give way to son, but before connecting dassembler the housing. In terms of ventilation, there is enough hole, maybe one or two hole on the face-down will not hurt.
I take off a star because there was a little (very little) game and therefore the rpi moves and the cover is a bit hard to close (and therefore open, which perhaps is not so bad).
3 radiators are provided, or on a rpi B +, only 2 radiators are used. The 3rd radiator is used for a type B rpi But as the box is for a rpi B +, there is a bundle ^^ Character error last radiator I'll put it on one of my old rpi ^^
