It’s a fire-test classification for floor coverings; Class I is more stringent. A common benchmark is a minimum critical radiant flux of 0.45 W/cm² under ASTM E648/NFPA 253.
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It’s a fire-test classification for floor coverings; Class I is more stringent. A common benchmark is a minimum critical radiant flux of 0.45 W/cm² under ASTM E648/NFPA 253.