5640-01-411-4052 (FF30HHP)
5640-01-411-4052 is equivalent to manufacture part number FF30HHP. It is a sound controlling board and is classified under Federal Supply Class 5640 (5640 - Wallboard and Insulation), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 5640 - Wallboard and Insulation and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.