The Aquatan ARMTAN-K is a free standing, rigid structured containment unit. Pre-radiused hot dipped galvanized steel panels are used for the construction of the shell and our high quality HI- DRILINE® or DRILINE® geomembranes are utilized to waterproof the structure. Depending on the size of the tank you can either elect to construct the ARMTAN-K® on a Do-It-Yourself basis by following the simple instructions supplied with the tank kit, or use Aquatan as your specialist installer.