New, old stock. 41" x 36". Intumescent sheet (expands with heat) to form a hard char that tightly seals penetrations against flame spread, smoke and toxic fumes.
specifications here: http://www.detectors.saint-gobain.com/uploadedFiles/SGdetectors/Documents/Product_Data_Sheets/BC400-404-408-412-416-Data-Sheet.pdf 2" X 2" X 1.5" thick NOTE the opposite sides are water clear. The edges will be saw cut and not smooth due to machining. It is up to the user to polish the sdes ( not needed for use) or not as you desire.
1 each new old stock "Wiss USA V-10 Drop Forged Solid Steel" length 10" w/ 2 1/2" cut and "Wiss-18 Inland Crucible Steel" length 13 1/2" w/ 3 1/2" cut , never used pair of sheet metal cutters/shears in mint condition, still in grease. My cut dimensions are measured by ruler, I am not an expert with these tools....
The Holcutters, are not hole saws. They're precision ground, heat treated tools that easily cut thru the stock rather than ripping, tearing, and pushing thru as do typical hole saws. They can produce holes three times faster and cleaner than hole saws in sheet metal and have dramatically extend tool life, too.
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