Modular showroom is a prototype study that explores the different prefabrication possibilities of shipping containers. There are two study cases: 20 feet (≈6,1m) and 40 feet (≈12,2m). The program was required by the construction company and consisted of a technical office and showroom to display the projects that were under construction. The modular system and the rapid assembly allows increasing the surface by easily adding identical containers. This system also offers the possibility of customization of the finishings, becoming a marketing tool. The standard measurements ease the transportation and its reuse. Most of the work can be done in the factory which reduces the construction time and helps with the building process and the quality control. The dry construction system assembly reduces the environmental impact compared to traditional construction.