A barrier including frame and still used wherever watertight or airtight construction is required. May also be used where local conditions require construction which is nontight. Excludes hatch,marine.
Classification: Doors, windows and frames and thresholds for doors of iron or steel
NSN 6645-01-052-4069
NSN 5855-00-300-1873
NSN 6240-01-295-8262
NSN 6685-00-880-1308
NSN 4140-00-409-6785
NSN 5925-00-448-2543
NSN 6145-01-109-1420
NSN 6135-01-202-8113
NSN 5950-00-306-4648
NSN 6650-00-617-3984
NSN 5950-01-491-3550
NSN 5925-01-211-5057