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 5996-01-633-7979
NSN 6620-01-189-8153
NSN 5895-01-151-1336
NSN 6620-01-567-4193
NSN 5975-01-198-3016
NSN 6135-00-086-7530
NSN 6135-00-170-8819
NSN 5965-01-605-4139
NSN 5920-01-010-3293
NSN 6645-00-851-6654
NSN 5835-01-123-4526
NSN 6110-00-503-1105