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- Q360 - Deck General/Safety
108. Which extinguishing agent is most effective on a mattress fire?
Water is the most effective extinguishing agent for a mattress fire because it cools and penetrates the burning material, fully extinguishing deep-seated Class A combustibles. Water's ability to absorb heat and penetrate porous materials makes it superior to agents that primarily displace oxygen or knock down flames without providing sustained cooling and deep penetration.
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