What type of fire extinguisher is indicated by a black hexagon?

The type of fire extinguisher indicated by a black hexagon is a Class K extinguisher. Class K fire extinguishers are specifically designed for use on fires that involve cooking oils and fats, typically found in commercial kitchens, such as those involving vegetable oils, animal fats, or other cooking media where these types of substances can spontaneously ignite. The black label helps identify this type of extinguisher quickly, ensuring that personnel can respond appropriately in a cooking-related fire scenario.

This labeling system is important for distinguishing between the various classes of extinguishers, allowing individuals to quickly choose the appropriate extinguisher for the specific type of fire they encounter. Other classes, such as A, B, and C, correspond to different types of combustible materials, which are distinctly classified and color-coded to prevent confusion during an emergency.