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 5925-00-411-5170
NSN 5998-01-346-1938
NSN 5935-01-092-1701
NSN 4140-00-501-7833
NSN 5925-01-580-5744
NSN 5930-00-699-1593
NSN 2925-01-528-7333
NSN 6145-01-454-3944
NSN 5920-01-457-9703
NSN 6610-00-987-9716
NSN 5835-01-384-3206
NSN 5999-00-081-0305