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 2925-01-311-7840
NSN 5905-01-507-1851
NSN 6130-01-451-3527
NSN 6645-00-583-0066
NSN 6645-01-152-1092
NSN 6610-01-244-7192
NSN 5930-00-501-3138
NSN 7035-01-142-8036
NSN 6650-01-293-0630
NSN 4140-01-096-5722
NSN 5965-00-985-9157
NSN 5930-01-165-8494