Hi Josue. Thanks for your reply. That's such a shame. The length and height are perfect, but it''s about 5mm too wide. I am looking to replace the containers on this lego train as they are going to house the battery packs as they need to be interchangeable. I have upgraded the engine with an Arduino board so that it can be controlled by an App'. The bigger project is to make a Container crane that will unload the Container when the batteries get low and replace it with a new Container as the track will be above our heads in our garden bar and I don't want to keep climbing up a ladder every time the batteries need changing. Thanks anyway, it looks great