When you use the search function, click on the "down" arrow at the side of the search box. This should open a new box that will show how you can search. Go to "folders" and click on it.
It should show all the folders in your account. If you do not see it showing, scroll down to any of the folders that have a "down" arrow showing. This means there are sub folders within the folder. Click on that and it should show the sub folders.
Is your "48" folder showing. If it is you need to go to your list of folders and look in the appropriate folder/sub folder. Once you have found it you should be able to drag it out of the folder and make it a "main" folder rather than a sub folder.