I discovered a giant pipe this sticking out of my house, which is being renovated. When I inquired, I was told it’s for the bathroom exhaust fans, and that putting it in a place that faces down the street in the middle of the siding, was the best place for it. He said the vents that have always been used, in the rear roof area, must not actually exist. Does anyone else see at least one of them, ( dark now, because they’re copper), and think it’s strange this other route was chosen.?