Portable units are self-contained structures designed for easy transport and use in various locations. They can serve multiple purposes, such as temporary offices, classrooms, or storage spaces. These units are often prefabricated, meaning they are built off-site and delivered ready for use, making them convenient for quick deployment. Common examples of portable units include shipping containers, mobile classrooms, and temporary housing. They are typically constructed with durable materials to withstand different weather conditions and can be customized to meet specific needs. Their flexibility makes them popular in construction sites, disaster relief efforts, and events.