The last bit of the renovation

Hopefully the last part of the renovation. I had noticed a lack of air refreshing in the bathroom, even when I turned the system on. I had intended to phone but I had not gotten around to it. Out of the blue I got a letter saying that they would come by to attach the bathroom to the air refreshing system, as known to me. Of course that was not known to me. They would only need to be in the bathroom to drill a hole and attach it. As I could not figure out how they could possibly attach it directly from the bathroom I decided to clear the full packed space near the air refreshing unit. A good thing I did. Because they went through to the other wall and had to put in a large tube there as well. They left without testing it, so that was the first thing I did. And fortunately it works.