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.