No other part numbers with same form, fit, and function found.
A device used to prevent passage of flame through a ventilating duct while air is flowing.
NSN 6220-00-177-3086
NSN 6130-01-377-3380
NSN 6645-01-562-1351
NSN 6320-01-495-0512
NSN 5999-01-090-7685
NSN 6130-00-280-3696
NSN 6150-01-137-4978
NSN 5945-01-526-8795
NSN 6110-01-014-3840
NSN 5925-01-238-4607
NSN 4140-01-176-2818
NSN 6620-01-545-9837