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 6220-01-224-7817
NSN 5975-00-719-9793
NSN 6610-01-209-8991
NSN 6145-01-401-3713
NSN 4140-01-461-2350
NSN 5925-01-202-2447
NSN 5965-00-946-6692
NSN 5950-00-352-7261
NSN 6610-01-556-2353
NSN 5990-00-892-5537
NSN 5990-00-561-3407
NSN 5975-00-325-3566