When I looked up a ready made system I saw it cost 370 euros !! That's when I decided to make it my self !
Here my instructables ! Have fun !
Step 1: Opening
Then you have to make an opening (a square of 10cm). I did this with a small drill and a jig saw. You could use a fretsaw or a dremel.
It's important to damage the square you saw out as less as possible, because it is reused as the cover. But you could use an other cover to.