In an addition, the Feed Box system distributes the electrical power from the Current Lead Boxes to the SIS100 magnets by superconducting bus bar. This technical specification defines the requirements for the design, manufacture, acceptance tests, transport and integration of 2 FAIR SIS100 Feed Box systems. Each system consists from 2 sub-components. For both components 3D-models are already designed to fulfil the requirements in respect to operation as well as integration. Nevertheless, the models may be adopted to the individual manufacturing processes.