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 5945-01-436-0072
NSN 5965-01-270-1039
NSN 6610-01-414-7481
NSN 5990-01-345-1468
NSN 5950-01-116-2142
NSN 5945-00-247-1241
NSN 5998-01-378-1569
NSN 4140-01-464-9222
NSN 6620-01-303-2563
NSN 2925-01-468-7073
NSN 5920-01-547-3642
NSN 5915-01-432-2491