SLAC National Laboratory (SLAC) seeks containment units for the Large Xenon Test Stand to be built at Lawrence Livermore National Laboratory (LLNL) for experiments related to neutrino-less double beta decay. The vessels will be designed in accordance with the LLNL design for these units and must be able to contain liquid xenon to simulate environmental conditions expected in the full system for test systems. The approximate size of these vessels will be two meters and will be made of stainless steel. The full assembly is made by three vessels that are nested together.