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A 4A40BC fire extinguisher has a capacity rating that indicates it can effectively extinguish Class A fires (ordinary combustibles like wood and paper) equivalent to 4 gallons of water, and it is also rated for Class B (flammable liquids) and Class C (electrical) fires. The "40" in the rating signifies its effectiveness against Class B fires, specifically that it can handle flammable liquid fires equivalent to a 40 square-foot area. This type of extinguisher is versatile and suitable for various fire hazards commonly found in commercial and industrial settings.

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3w ago

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