Understanding the UL Fire Resistance Directories - Ron Blank ...
Understanding the UL Fire Resistance Directories - Ron Blank ...
Understanding the UL Fire Resistance Directories - Ron Blank ...
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<strong>Understanding</strong> <strong>UL</strong><strong>Fire</strong> Rated Assemblies• Based on hourly ratings• Test standards:ASTM E119NFPA 251ASTM id th t d d tASTM provides <strong>the</strong> standards towhich <strong>UL</strong> tests assemblies.