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 6610-00-647-3830
NSN 5905-00-900-5490
NSN 6645-01-593-3608
NSN 6135-01-654-6147
NSN 5985-01-234-3326
NSN 6610-01-302-6347
NSN 5905-00-620-1118
NSN 5999-01-187-8828
NSN 6105-01-382-7702
NSN 6645-01-422-9672
NSN 5985-01-045-7979
NSN 7035-01-204-7481