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 5975-01-176-3615
NSN 6105-00-351-8009
NSN 4140-01-020-4224
NSN 5999-00-781-3116
NSN 6150-00-775-1375
NSN 5960-01-233-0311
NSN 4140-01-457-8583
NSN 5965-01-147-5847
NSN 6620-00-565-9793
NSN 5855-01-217-6857
NSN 6110-01-575-4926
NSN 5910-01-030-2275