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 6685-01-250-8200
NSN 5990-01-442-3520
NSN 5855-00-198-3197
NSN 5950-01-455-4215
NSN 7035-00-059-7970
NSN 6650-00-434-0188
NSN 5895-01-503-8615
NSN 5855-01-100-3272
NSN 6240-01-062-1684
NSN 5975-01-198-9013
NSN 6620-01-386-5914
NSN 6110-01-411-7478