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All UL Listed Fire Extinguishers have a rating classification on the extinguisher
nameplate or label. Some extinguishers are marked with multiple classifications such as
2A:10B:C. These extinguishers are capable of extinguishing more than one class of fire.
Extinguishers classified for Class A and Class B fires carry a numerical rating that
indicates how effective the fire extinguisher is in extinguishing standard test fires.
Extinguishers classified for Class C fires do not have a numerical rating. The C
classification means that the extinguisher is safe to use on energized electrical
equipment.
Extinguishers classified for Class D fires do not have a numerical rating. The D
classification means that the extinguisher is effective in controlling certain combustible
metals fires.
Extinguishers classified for Class K fires do not have a numerical rating. The K
classification indicates that the extinguisher is effective for controlling fires in
kitchen cooking appliances that use combustible cooking media, such as vegetable or animal
oils and fats.
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