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 5855-01-630-5790
NSN 4140-00-146-9795
NSN 5910-00-950-6829
NSN 6220-01-041-2194
NSN 6645-01-483-1331
NSN 6145-01-623-6197
NSN 6145-00-812-2670
NSN 6650-01-247-6623
NSN 5999-01-485-0750
NSN 5920-01-445-7000
NSN 6145-01-295-1107
NSN 5960-00-529-2704