Background: In the recents decades, one of humanity's biggest challenges has been the climatecrisis where emissions of greenhouse gases are the main problem. This has forced companies toact more environmentally friendly due to laws and regulations but also due to customer demand.Circular economy has become a hot topic with various definitions. One of the definitions isopen-loop supply chain and this essay will focus on explaining the concept of open-loop supplychain. Research question: 1. What can a business model look like for an intermediary for reusable durable goods in anopen-loop supply chain? 2. What challenges exist within reuse of durable goods between suppliers and intermediaries inan open-loop supply chain? Purpose: The purpose of this essay is to, through a multiple case study, develop a businessmodel on how intermediaries for reusable durable goods can work with an open-loop supplychain and how it can be applied in future industries. Method: Primary data through semi-structured interviews and secondary data through scientificarticles. Conclusion: The essay developed a business model for intermediaries for reusable durablegoods in an open-loop supply chain which is applicable to other industries. The essay alsodefined some of the challenges for intermediaries operating in an open-loop supply chain whichare transaction costs, building relationships, loss of control and long transportations. Furthermorethe level of relevance of these challenges depends on the amount of responsibility theintermediary has taken upon itself.