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 6220-01-487-3904
NSN 6135-01-545-6582
NSN 5945-01-467-0479
NSN 5895-00-365-4813
NSN 5975-01-469-9457
NSN 5960-01-599-9821
NSN 6620-01-419-3524
NSN 6610-01-026-1701
NSN 5960-01-449-1310
NSN 4140-01-536-9823
NSN 6130-00-776-0157
NSN 6105-01-205-0301