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Fire Hazard Classifications
| The following classifications, based on the ASTM-E-84 (UL tunnel) tests have been established by the NFPA, and have been widely accepted by federal, state and local authorities. | |
| Class "A" Rating | Flame Spread Index 0 - 25 |
| Class "B" Rating | Flame Spread Index 26 - 75 |
| Class "C" Rating | Flame Spread Index 76 - 200 |
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