A framed unit, with attachments to exclude water and control the entrance of air and light, designed to fit a ship's porthole.
NSN 5935-00-822-5675
NSN 5996-01-094-7025
NSN 6145-00-269-4271
NSN 5925-01-100-3631
NSN 5905-01-376-5271
NSN 5835-00-170-5238
NSN 6645-00-593-5420
NSN 6240-01-415-6004
NSN 5996-01-241-1843
NSN 5855-01-340-6541
NSN 5910-01-042-2371
NSN 7035-00-050-9962