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 6650-01-076-6685
NSN 5950-00-196-0824
NSN 5998-00-864-8336
NSN 5915-00-357-1085
NSN 6610-01-033-1748
NSN 5975-01-570-2539
NSN 5990-00-727-0723
NSN 5925-01-622-0438
NSN 6240-01-592-4068
NSN 5999-01-152-1001
NSN 5915-01-111-9971
NSN 6685-01-182-7806