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 6220-01-246-1461
NSN 6220-00-231-5778
NSN 5905-00-562-9986
NSN 5996-01-345-2665
NSN 6620-01-446-7290
NSN 5965-01-550-5587
NSN 5960-01-391-3707
NSN 5930-01-112-2491
NSN 6240-00-389-4822
NSN 5835-01-286-6499
NSN 5935-00-512-9048
NSN 5945-01-022-2299