What is the traditional symbol for a Class K fire extinguisher?

• A. Black hexagon
• B. Red circle
• C. Blue triangle
• D. Yellow square

Answer: (A)

The idea being tested is how fire extinguisher classes are identified by simple pictograms so you can grab the right one quickly. For Class K, which covers cooking oils and fats, the traditional label uses a black hexagon. That shape is distinct from other class symbols, so it’s easy to recognize in a kitchen or training scenario. Other shapes and colors are used for different classes, so they don’t match Class K. So the black hexagon is the symbol you’d look for on a Class K extinguisher.