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 5999-01-077-5649
NSN 6645-01-280-0252
NSN 5930-01-220-0697
NSN 6105-00-316-3799
NSN 6150-01-360-0509
NSN 6240-01-231-9243
NSN 4140-01-461-9775
NSN 6220-01-423-9491
NSN 4140-00-907-0775
NSN 5999-01-468-0712
NSN 6220-01-183-4557
NSN 6620-01-415-8550