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 6645-01-058-3817
NSN 5835-01-506-0746
NSN 5915-01-142-2018
NSN 6650-01-512-1930
NSN 6220-01-363-4640
NSN 6150-01-231-9969
NSN 5945-00-734-7263
NSN 5920-00-527-9473
NSN 5960-00-615-9972
NSN 6135-01-235-4168
NSN 5999-01-615-3706
NSN 5996-01-173-3202