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 6620-01-432-7032
NSN 6240-00-646-6931
NSN 5999-00-484-0979
NSN 5930-00-579-7748
NSN 5895-01-226-4035
NSN 6685-01-604-2863
NSN 6145-01-151-2823
NSN 5960-01-614-8005
NSN 6105-01-421-4457
NSN 6620-00-767-4377
NSN 6685-00-133-4225
NSN 5935-00-299-8036