What is the class and rating for EFRS Dry Powder extinguisher?

• A. 159C +/-5C
• B. 10A120BC
• C. 10BC
• D. 14kg, METAL X

Answer: (D)

The main idea here is identifying how this specific extinguisher is described in EFRS documentation. For EFRS Dry Powder extinguishers, the class and rating are indicated by the physical size and the model designation rather than a numeric A/B/C rating. The weight shows how much dry powder is inside, which relates to discharge duration and overall capacity, while the model name (METAL X) points to the particular cylinder construction used by EFRS.

That’s why the option listing “14kg, METAL X” is the best fit. It directly communicates the extinguisher’s size and its specific model/construction, which in this context serves as the class and rating descriptor. The other options give generic fire-class ratings like 10BC or 10A120BC, or a temperature rating, which aren’t how the EFRS dry powder unit is specified in this material.