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 6685-01-605-1284
NSN 5998-01-484-7990
NSN 5925-01-147-8848
NSN 5998-00-111-0632
NSN 6620-01-649-6050
NSN 6135-01-418-4156
NSN 5996-00-808-8707
NSN 5930-01-126-2680
NSN 6220-00-702-8263
NSN 6145-01-631-1788
NSN 5920-00-221-4556
NSN 5945-00-193-4891