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Extinguishers suitable for Class B fires, which involve flammable liquids like gasoline, oils, and solvents, are identified by a specific marking system to ensure users can quickly select the appropriate extinguisher during an emergency. The correct identification for Class B fire extinguishers is a red square containing the letter "B."
This designation is part of a standardized color and symbol system used in fire safety to help people recognize the different types of fire extinguishers at a glance. The red background indicates the presence of a Class B hazard, while the letter "B" clearly denotes that this extinguisher is specifically designed to combat flammable liquid fires.
The use of color and lettering aids in rapid recognition, which is critical in emergency situations where time is of the essence. Users can quickly locate the correct extinguisher without confusion, helping to ensure safety and effectiveness in firefighting efforts.