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 6240-00-734-3276
NSN 6130-01-577-7393
NSN 5996-00-107-2499
NSN 6150-01-634-0575
NSN 5855-01-360-6650
NSN 5915-00-147-0603
NSN 5915-01-315-4233
NSN 6320-01-300-7994
NSN 5930-00-059-7398
NSN 5905-01-288-6240
NSN 6685-01-297-7983
NSN 5975-00-179-8519