These knocked down Cubitainer® inserts are perfect for your non-UN rated needs. Made of high purity resins, they are strong yet collapsible. As they are also FDA compliant, they are a great option for water storage in your trunk or when you are going camping. Each size is designed to fit in its corresponding Cubitainer® carton, so make sure you get the right carton for your size. Also faucets must be purchased separately as well. If you need a UN Rated container, fully assembled Cubitainer® packaging is available. If you don't need the UN Rating, though, shipping is cheaper when you purchase the inserts and cartons seperately.