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 6150-01-460-4609
NSN 6620-01-207-0667
NSN 5915-00-111-1905
NSN 6220-00-581-3858
NSN 6610-01-316-1830
NSN 6220-00-262-0017
NSN 5905-01-574-1648
NSN 4140-00-138-2558
NSN 5999-01-430-4997
NSN 6110-01-659-6134
NSN 5975-00-321-1146
NSN 5935-01-369-1827