A wide range of shipping containers are available for sale through the National Containers network of container companies. These containers can be sold as is or can be converted to suit the clients' needs. There are many standard conversion options available including: Below we will. All Containers are made to ISO maritime standards meaning that all come in standard sizes. Containers come in 3m x 2.44m, 6m x 2.44m and 12m x 2.44m and come in a standard height of 2.59m and high cube specification with a height of 2.89m. For more info. Our selected container company in Cape Town are experts at container conversions. They provide cost-effective alternatives for conventional buildings. Whether you need additional onsite office space or perhaps an ablutions facility a container conversion. Converting reconditioned, used containers has quickly emerged as a trend that is leading the alternative housing, temporary office and workshop market. These sturdy second-hand shipping containers can be turned into something completely new and are being converted. One-trip containers are typically marketed as new containers. These are new shipping containers that have only been used once. Once the cargo has been offloaded and the containers have undergone a thorough cleaning and inspection, they are.