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 6620-01-529-7513
NSN 5920-00-892-2640
NSN 6685-01-434-2662
NSN 6105-01-024-0321
NSN 5915-01-559-4927
NSN 5925-01-498-1964
NSN 5915-00-683-8248
NSN 5999-00-129-9117
NSN 6220-01-340-8684
NSN 5950-01-455-9129
NSN 6110-01-368-8608
NSN 2925-01-645-2948