A filter designed to be used with an obstruction marker light.
NSN 5855-01-184-8089
NSN 5950-01-420-8913
NSN 5990-00-078-8529
NSN 6320-00-036-3688
NSN 5965-01-600-8137
NSN 6240-01-591-2467
NSN 5950-01-255-5457
NSN 5998-00-549-6670
NSN 5965-01-201-8399
NSN 6130-01-521-2555
NSN 6110-00-442-7657
NSN 6240-01-458-1459