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 6240-01-186-3273
NSN 6145-01-360-4335
NSN 5999-01-317-6216
NSN 5996-00-081-2564
NSN 5996-00-771-0635
NSN 5855-00-916-2236
NSN 5975-01-522-3892
NSN 6650-01-465-5362
NSN 6135-00-519-1325
NSN 5985-01-627-6420
NSN 7035-00-235-3529
NSN 6240-01-455-7903