This document amends the Customs Regulations by requiring the submission of a Customs Form (CF) 4455, Certificate of Registration, rather than a CF 3311, Declaration for Free Entry of Returned American Products, when shooks and staves produced in the United States are exported from the United States with the intention that they will be returned to the United States, exempt from duty, in the form of complete boxes or barrels in use as usual containers of merchandise. When boxes or barrels made from the exported American shooks and staves, for which a CF 4455 has been submitted, are imported, the importer of the boxes or barrels must use the CF 4455 as well to make such a claim. Shooks and staves produced in the United States that are exported and so returned are exempt from customs duties provided their identity is established by the proper submission of the CF 4455. The amendment helps to clarify the procedures regarding the free entry of such American produced shooks and staves returned to the United States.