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 6150-01-449-9299
NSN 6110-00-978-8329
NSN 2925-01-391-9247
NSN 6610-00-176-5486
NSN 5945-01-299-1768
NSN 4140-01-171-3246
NSN 5975-01-355-0392
NSN 6150-01-334-3774
NSN 6150-00-144-7115
NSN 5930-01-386-7181
NSN 5905-00-079-2108
NSN 6620-00-904-2139