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 5950-00-812-6220
NSN 6620-01-312-9113
NSN 5895-01-512-9637
NSN 5998-01-555-8489
NSN 5945-00-276-9274
NSN 6130-01-394-2874
NSN 6135-01-500-0572
NSN 6130-01-434-1474
NSN 5910-00-265-3302
NSN 5930-01-381-6277
NSN 5935-01-456-7076
NSN 5960-01-245-6088