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"Fireproof" metal shutters



Does anyone know anything about the  interior "fireproof" metal shutters that were installed years ago in records "vaults"?   We have come across them a couple of times.  In one location they were down and covered the windows; in another they were not deployed but at the top of each window, contained in a large round metal apparatus.  The manufacturer of the one lot we saw was Kinnear Manufacturing of Columbus, Ohio (apparently defunct -- it also made garage doors).   Does anyone know their proper name; have any experience with them?   We're curious,  and it is Friday!

Cynthia Swank


Inlook Group
P.O. Box 405
Portsmouth, NH 03802-0405
 
603-964-9294
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