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Digipack: “A folded case, typically made of coated paperboard, with a plastic tray glued into it.” It’s basically this but with two plastic trays.
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The packaging list description says ‘tray’ (singular), and the illustration in the list is of a single tray. I’ve been ticked off for calling examples such as yours ‘Other’.
My current solution is to call it Digipak but with an annotation saying ‘Packaging is a N-section Gatefold Digipak’, For your very clear illustration it would say ‘3-section’.
Your illustration (plus a clear description) would make a useful addition to the packaging list.