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 6610-01-049-8747
NSN 5855-01-184-8089
NSN 6145-00-481-1954
NSN 5945-01-274-2265
NSN 6620-00-100-4517
NSN 6320-01-449-1014
NSN 6110-00-349-6848
NSN 4140-01-494-8116
NSN 6645-00-099-6913
NSN 5915-00-300-8481
NSN 6110-01-217-3096
NSN 6645-01-370-4259