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 5975-00-185-5243
NSN 5905-01-229-9552
NSN 2925-00-471-1128
NSN 6150-01-122-5963
NSN 4140-01-230-3276
NSN 6320-00-546-9249
NSN 5915-01-275-6235
NSN 5975-01-123-9111
NSN 5925-01-076-1429
NSN 7035-01-605-2346
NSN 6610-00-863-6441
NSN 5990-01-548-5979