I have nixed the other 2 boiler houses I had built in lieu of 1 large one. This one now worked from 4 superior paper kits has 4 large tall stacks that were scratch built. I believe these contribute to a more iconic vision of the mill than the other previous iteration. The building is 30" in length or 400 feet long. About the size of the boiler/powerhouse at US South Works that was actually still standing till about 2002.