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 5990-01-554-8547
NSN 5999-01-534-7592
NSN 5990-01-121-1175
NSN 6105-00-635-9809
NSN 6650-01-555-9348
NSN 5985-01-518-4653
NSN 6240-01-388-2413
NSN 6150-01-137-8203
NSN 2925-00-999-8967
NSN 5930-01-069-5345
NSN 5925-01-287-9206
NSN 4140-00-314-9946