Thank you. The walls are from a series of model sets made for Gundam robots. They come in a series numbered 1 through 6. I used a complete set of #1, #2, #3, #4, #5, #6 plus an additional set #1, #2 , and #3 to make a total of 9 walls and 9 floor plates to build the barracks. Here is a link to the ebay seller where I purchased mine: http://www.ebay.com/itm/151792399939?_t![]()