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 6110-01-421-2714
NSN 5996-01-195-4122
NSN 4140-01-092-6758
NSN 5945-01-286-9652
NSN 5935-01-212-7150
NSN 6240-01-584-6774
NSN 6645-01-099-6887
NSN 6685-01-426-8929
NSN 5990-01-582-1977
NSN 5910-00-328-7251
NSN 2925-01-381-5307
NSN 6220-01-380-1211