curl --request GET \
  --url https://api.maalbar.dk/screenings/{screeningPublicId}/packaging/masterbox \
  --header 'X-Api-Key: <api-key>'

{
  "publicId": "scm_xxxxxxxxxxxx",
  "label": "<string>",
  "functionalUnitValue": 123,
  "productionWaste": 123,
  "recycleShare": 123,
  "item": {
    "publicId": "itm_xxxxxxxxxxxx",
    "category": {
      "name": "<string>"
    },
    "functionalUnit": "<string>",
    "displayName": "<string>"
  },
  "screeningMaterialMasterBox": {
    "publicId": "smb_xxxxxxxxxxxx",
    "width": 123,
    "height": 123,
    "depth": 123,
    "amount": 123
  },
  "screeningMaterialPackaging": {
    "publicId": "spa_xxxxxxxxxxxx",
    "width": 123,
    "height": 123,
    "depth": 123,
    "amount": 123,
    "amountType": "<string>"
  },
  "screeningMaterialMaterials": [
    {
      "publicId": "sma_xxxxxxxxxxxx",
      "proportion": 123,
      "recycleShare": 123
    }
  ],
  "screeningMaterialProcesses": [
    {
      "publicId": "spr_xxxxxxxxxxxx"
    }
  ]
}