A framed unit, with attachments to exclude water and control the entrance of air and light, designed to fit a ship's porthole.
NSN 6610-01-289-9650
NSN 6130-01-258-4130
NSN 5996-01-485-0305
NSN 5930-00-226-8016
NSN 5930-01-475-8896
NSN 5895-00-235-8510
NSN 5975-01-168-7643
NSN 4140-00-225-8586
NSN 5998-00-246-8598
NSN 6650-01-063-7714
NSN 5996-01-443-5617
NSN 5920-00-089-4130