A filter designed to be used with an obstruction marker light.
NSN 5996-00-503-8499
NSN 6130-00-238-5177
NSN 7035-01-463-3368
NSN 6685-00-937-5337
NSN 5855-01-558-9357
NSN 6135-01-441-0402
NSN 5996-01-516-2218
NSN 6320-00-433-2773
NSN 6220-01-467-1941
NSN 5835-01-352-6725
NSN 7035-00-703-3535
NSN 4140-01-392-4664