En:BoxType

Container type (cupboard, box, shelves, etc.)

Enumeration is used for declaration type to object-container.

BoxType.Safe - Vertical container with opening door
BoxType.Chest - Chest with opening cover on the earth
BoxType.Shelves - Shelves. You can use this type for any inanimated containers (boxes, pots, etc.)

For types BoxType.Safe and BoxType.Chest animation of container action (open/close) should be present.
If container has type BoxType.Chest then unit will bend down to open this container;
If container has type BoxType.Safe or BoxType.Shelves then unit will action with object by standing on the ground;