With the new construction of apartments in Zwolle, an accessory parking lot was in need of a vent stack for the ventilation of exhaust gasses of the cars to keep the ambient air in the garage fresh and healthy. The vent stack was planned to pass the building closely, so the appearance of the vent had to be taken into account. We have designed the air exhaust in such a way that it fits in well with the living environment and is in style with the apartment complex.