In this paper it is argued that a current dualism, concerning industrial districts’ supply chain, deals with wide networks on the one hand, and on short networks on the other. The work considers this territorial arrangement in its connection with the plans addressed by local governance institutions. After giving an overview of recent developments in various territorial approaches, the article seeks to establish whether the above opposition turns into an hybrid configuration of the supply chain or not, with respect to a specific case-study (the industrial district of Lumezzane). An affirmative reply is given, by playing upon variables which seem to be strictly related to the opening or closing degree of the intermediate stages of the supply chain. These aspects also allow to make confrontations with other similar local production systems.