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 6610-00-632-6645
NSN 6105-01-466-1458
NSN 5965-01-477-4938
NSN 5855-01-076-2741
NSN 6145-00-811-1945
NSN 6130-01-443-2448
NSN 6650-00-416-2953
NSN 5895-01-410-7717
NSN 4140-01-315-1986
NSN 5975-01-513-1995
NSN 5950-01-583-6563
NSN 5998-00-816-6014