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 5915-01-242-2784
NSN 5910-01-157-3061
NSN 6320-01-447-4112
NSN 5960-01-449-1310
NSN 4140-01-540-4017
NSN 5855-01-188-4049
NSN 6620-01-420-3386
NSN 5950-01-606-7158
NSN 5945-00-203-5925
NSN 5935-01-352-3470
NSN 5985-01-422-2552
NSN 5965-01-029-5222