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 6130-01-083-6049
NSN 5920-00-453-4377
NSN 5975-01-497-2110
NSN 5985-01-647-3623
NSN 6220-01-478-7747
NSN 5895-01-279-5562
NSN 6645-01-322-5644
NSN 5930-00-518-3135
NSN 6110-00-829-8060
NSN 6130-01-586-6117
NSN 5950-01-168-8071
NSN 6685-01-506-5546