Fire Extinguishers and Fire Blankets
What do the UL Ratings mean?
UL stands for Underwriters Laboratories
Class A
Fires involving wood, Paper, cloth, trash, plastics (solids that are not metals).
Class B
Fires involving flammable liquids and vapors, such as gasoline, oil, grease, acetone.
Class C
Fires involving electrical Currents.
Class D
Metal fires (magnesium, sodium, potassium and sodium-potassium alloys).
Class K
Cooking oil fires (mainly relating to fires in restaurants).
Classes A fires relate to homes and households, and are among the most common. They involve "ordinary" combustibles such as wooden furniture, paper trash, clothing and curtains, and ever the kind of rubber found in your shoes.
Unlike in Europe and Australia, all flammable liquids and gases are Class B in the United States. These are the kind of elements you will usually found in your garage, workshop and kitchen.
Class C relates to electrical fires and electrical equipment.
In relation to Class A, you multiply the number in front of the letter by 1.25 to to give you how much water the extinguisher contains. For example, a Rating of 2-A shows the unit contains 2.5 gallons of water.
For a Class B Rating, the number shows how many square feet the extinguisher can suppress.
Classes C, D, and K do not have a numerical rating.
So, an extinguisher with a 2-A:10-B:C Rating. This translates to it containing 2.5 gallons of water, that it can suppress fire over 10 square feet, and it's suitable for fighting fires in the A, B, and C classes, as described above.
We have written more about fire suppression, the different types of fire extinguishers, and the Classes of fire.
Highly popular rechargeable multipurpose fire extinguisher Rated 1-A:10-B:C from a brand trusted by many. It's an essential accessory for suppressing household fires.
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Rated 2A:10B:C this easy-to-use twin pack of multipurpose extinguishers each of which has a discharge time of 14 seconds over a range of 12 to 18 feet.
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With a rating of 4-A:80-B:C, this relatively large fire extinguisher has an extended discharge time of 22 seconds over a range of between 15 to 21 feet.
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Heavy Duty rechargeable fire extinguisher that fully meets the 2-A:10-B:C code requirements, is easy to use, and is backed up by a 12-year limited warranty.
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Rated for 1-A:10-B:C this example is designed to deal effectively with most common household fires when caught in time.
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Top selling and perfect for application in the kitchen, garage and RV, this high-powered spray provides 32 seconds of firefighting time against Categories A, B and C above.
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UL Rated for Classes A, B and C fires, this highly regarded and refillable model from Amerex has a discharge time of 14 seconds.
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Ideal for smothering a small fire so you can act quickly to prevent its rapid spread. The blanket also acts as a body heat shield to help you escape in an emergency.
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100% fiberglass flame retardant fabric to EN-1869:1997standard. These fire blankets are just for one-time use if you use them in a fire.
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NB: Images for illustration purposes and not to scale