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 7035-01-440-8877
NSN 5975-00-868-5643
NSN 6645-00-256-4072
NSN 6135-00-334-4500
NSN 4140-01-458-2743
NSN 6685-01-200-6784
NSN 5930-01-258-0802
NSN 7035-00-205-8739
NSN 6240-01-247-4805
NSN 5905-00-137-6471
NSN 5985-01-613-6802
NSN 6320-01-539-4789