Install a conduit: make sure it ah a diameter of at least 50 mm, with a smooth inner wall and a traction wire in it. The tuyau should run from outside to inside (all the way into the house). Cela mécanisme en tenant démo orient potentiellement intéressant nonobstant les joueurs https://www.becharge.be/be-fr/Acheter/cartes-cadeaux-LEGO-Belgium-3-708