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| How Does It Work? |
| Fire Extinguisher Sizes | Portable extinguishers are also rated for the size of fire they can handle. This rating is expressed as a number from 1 to 40 for Class A fires and from 1 to 640 for Class B fires. This rating will appear on the label-- 2A:10B:C, for example. The larger the numbers, the larger the fire of a specific class on which the extinguisher can be used (but higher-rated models are often heavier - make sure you can hold and operate an extinguisher before you buy it). No number accompanies an extinguisher's Class C rating. The C on the label indicates only that the extinguisher is safe to use on electrical fires.
Extinguishers for Class D fires must match the type of metal that is burning. These extinguishers do not use numerical ratings. Extinguishers for Class D fires are labeled with a list detailing the metals that match the unit's extinguishing agent.
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1159 S Soto St . Los Angeles . CA . 90023-2198 .  323-263-6954 |
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| FAQs |
 | How Do Ionization Smoke Detectors Work? | | Why does smoke come from a fire? | | How do multi-class dry chemical fire extinguishers work? | | How Do Photoelectric Smoke Detectors Work? |
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