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 5905-01-558-3846
NSN 4140-00-240-1848
NSN 6650-00-766-5137
NSN 5835-01-632-6627
NSN 6685-01-634-0611
NSN 5950-01-023-6638
NSN 5960-01-398-4883
NSN 6145-01-082-3928
NSN 6105-00-035-8809
NSN 6645-01-571-8578
NSN 5950-01-123-9661
NSN 5960-00-368-4084