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 5960-01-491-2993
NSN 5835-00-155-1379
NSN 5990-00-791-4064
NSN 5920-00-159-8582
NSN 5910-01-327-4318
NSN 5999-01-337-5030
NSN 5920-00-369-0923
NSN 2925-01-629-9416
NSN 5975-01-313-6943
NSN 5998-01-539-8855
NSN 5990-01-199-2846
NSN 5985-01-564-5698