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 5950-00-144-4139
NSN 5950-01-220-0681
NSN 5935-00-513-9606
NSN 6320-01-239-7647
NSN 5975-00-189-0857
NSN 5975-01-624-9572
NSN 2925-01-463-8856
NSN 5975-00-644-4972
NSN 5965-00-168-9624
NSN 5915-01-478-9254
NSN 5960-00-468-5353
NSN 5925-00-452-1270