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 5925-01-453-6645
NSN 6150-01-010-1456
NSN 5996-01-211-8067
NSN 5920-01-457-3166
NSN 4140-00-299-6328
NSN 5960-01-163-8905
NSN 6320-01-250-0290
NSN 6135-00-497-0491
NSN 5996-01-115-2823
NSN 5950-01-163-2865
NSN 5975-01-650-3074
NSN 6320-01-216-1678