A filter designed to be used with an obstruction marker light.
NSN 2925-01-032-3814
NSN 6610-01-206-3921
NSN 5996-00-117-3639
NSN 6220-01-297-9361
NSN 5920-01-260-9234
NSN 6110-01-431-8889
NSN 5895-00-126-1930
NSN 6610-01-253-5112
NSN 5950-01-018-2363
NSN 6610-00-402-6856
NSN 5945-01-553-0718
NSN 6220-00-682-8292