4410-00-869-3888 (D4307(12INX16IN))
4410-00-869-3888 is equivalent to manufacture part number D-163-487. It is a manhole boiler arch and is classified under Federal Supply Class 4410 (4410 - Industrial Boilers), stocked for defense, aerospace, MRO, and industrial maintenance applications. This item is cataloged in the NATO supply system under 4410 - Industrial Boilers and is available through NSN-PARTS for U.S. government MRO, and commercial procurement.