Explanation: I was planning to use these jacks in boxes of 40 mm.
In reality, impossible to settle in my walls since the back sheet is that it takes in 45mm backward, and besides the case.
Another point, the spacing of the fixing screws are not in principle in French format, and so we need to get to tinker with something.
It's cheap, moderately over, it can accommodate moderate some adjustments, but that was not agreed.
