MSDS HM Frames Cold Rolled Steel

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The three most common steel types are cold rolled steel, galvannealed steel, and galvanized steel. Cold Rolled Steel (CRS) is suitable for most interior applications, is uncoated steel a...
A simple field test can determine if a door or frame is galvanized or cold rolled steel, however this test will not determine if the steel is A60, A40 or G90. The Tech Tip can be viewed here.
Attached are the MSDS (material safety data sheet) of the three different manufacturers of batteries for the 900-BB battery backup.   MSDS for 900-BB