I forgat to add that the dust doesn't only just goes to the dustcollector in the garage. That is the way the "heavier" stuff goes to! The really fine dust goes into a pipe that brings it all up to the roof, into the air!
I also didn't tell that this system is so much healthier for persons with a allergy against dust!! Both our kids have that, and they feel much better since we live here!!

I am so amazed that this system is unknown to so many!! It is a big succes here in Belgium and in the Netherlands!
It is rather pricy though....