Also watertight
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 5945-01-252-8662
NSN 6220-01-350-4668
NSN 5935-01-115-7461
NSN 6650-01-579-3855
NSN 6135-01-167-7604
NSN 6220-00-440-0418
NSN 6145-00-853-5816
NSN 5960-01-573-6483
NSN 5905-01-328-4533
NSN 5910-00-344-1923
NSN 5975-00-244-0706
NSN 5998-01-253-6561