Expandable House/Foldable House Expandable box-kind modular house, which includes a box module, foldable roof module; reported box module features a box-type steel structure frame, a base plate set on the steel structure frame, a first hill wall, a next hill wall Found on both sides of your steel structure frame https://sergiopqrsu.livebloggs.com/37683806/the-definitive-guide-to-foldable-temporary-portable-modular-prefab-welding-mobile-container-house