Items stored to your Box account can be moved to the Trash if they are no longer needed. Doing this periodically will make your All Files list less cluttered. Once items are moved to the Trash, they will be kept there for 30 days.
If you accidentally delete something, it can be restored from the Trash and put back in its original location. You can also permanently delete items from your Trash earlier than Box’s 30-day automatic delete.
Important:
Deleting a shared item deletes it for everyone who has access to it. Deleted items can only be restored by either the person who deleted it or the owner of the item!
Moving Items to the Trash
In your account -
Move your mouse over the More Actions button. A menu will appear.
Select Trash. The item will be moved to the trash.
Restoring an item from the trash
On your left hand menu you will see trash - click on it and then find the control button(...) for the item you wish to restore click (...) you can restore or permanently delete the item.