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 6685-01-545-1393
NSN 5945-01-583-5524
NSN 5895-01-379-8039
NSN 5945-01-496-5799
NSN 7035-01-453-4242
NSN 5965-00-567-7679
NSN 5998-00-023-8968
NSN 5925-01-234-8312
NSN 6145-01-057-4524
NSN 6610-00-988-9294
NSN 5905-01-271-8492
NSN 5985-01-381-6674