United Rentals is the place to rent or buy storage containers and mobile offices big and small. We customize, build and deliver new and used office trailers, modular buildings and shipping containers for retail, healthcare, construction and more. Typical container sizes are 20’ and 40’, but others like 10’ to 48’ may be available. Our ground-level offices are easy to transport from one site to the next and can be customized with electric hookups, extra doors, shelving, insulation, HVAC and more.