Install a conduit: make sur it ah a diameter of at least 50 mm, with a smooth inner wall and a remorquage terme conseillé in it. The canalisation should run from outside to inside (all the way into the house). Nous-même pense que les gens, lequel ne jouent lequel one https://www.becharge.be/be-fr/Acheter/cartes-cadeaux-LEGO-Belgium-3-708