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 6610-01-468-0679
NSN 5965-01-112-8758
NSN 6320-00-575-6072
NSN 6110-01-069-2485
NSN 5920-01-195-2299
NSN 6110-00-246-3941
NSN 6150-01-561-0782
NSN 6240-00-690-2274
NSN 2925-01-386-7392
NSN 5960-01-391-4701
NSN 5950-01-293-5074
NSN 5965-00-171-1265