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 6135-00-477-8847
NSN 5975-01-208-2714
NSN 6150-01-381-6962
NSN 6135-01-329-7994
NSN 6610-01-116-2527
NSN 6110-00-936-2110
NSN 7035-00-946-2642
NSN 5935-01-413-1131
NSN 5945-00-477-0082
NSN 6240-01-343-4322
NSN 5945-01-138-6080
NSN 5835-00-227-7909