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 6240-01-158-9299
NSN 5975-01-430-7136
NSN 5950-01-024-9461
NSN 5965-01-299-0160
NSN 5960-00-266-6741
NSN 6220-00-925-4645
NSN 6145-01-295-5288
NSN 5915-01-570-5946
NSN 5855-00-400-2622
NSN 6105-01-220-9314
NSN 6650-01-494-9956
NSN 5990-00-488-1091