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 5855-01-423-0817
NSN 5930-00-239-7564
NSN 5915-00-265-0967
NSN 5999-00-701-9831
NSN 6240-00-932-1331
NSN 5950-01-178-8009
NSN 6620-01-525-3650
NSN 6240-00-702-9068
NSN 5990-01-529-6347
NSN 5950-01-017-0504
NSN 5925-01-409-2616
NSN 6610-00-227-8846