Stable and precisely but bad nelüftet

The case is quite stable and the Raspi fit tightly but exactly in the mounts.
But an important point of criticism is the quasi ineffective cooling.
Only on the back (as appropriate) are holes available.
Unfortunately, this is not very helpful, because
a) creates the heat to the front side
and
b still cause) holes on one side, no air circulation.

With a little technical skill you can solve the problem of course by further drilling.
However it works out so cleanly and evenly only in exceptional cases that the otherwise beautiful appearance does not suffer.

Nevertheless, a good and inexpensive purchase.
I had already found no other case that this problem has not.