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UL Rating guide for Choosing a Fire Extinguisher. All Fire Extinguishers are tested by the Underwriters Laboratory for safety and performance. They are rated based on the type of fire that they will put out, and their classification is determined by the size of fire they will put out.

Fire extinguishers are labeled to identify the classes/types of fire (Class A, B, C, D, or K) on which the extinguisher will be effective and the relative fire extinguishing effectiveness or capacity. The UL rating is commonly broken down into Class A and Class B:C ratings.

Aug 26, 2022 · Extinguishers are given a letter rating and some also have a number designation, which come from being tested to UL 711, Rating and Fire Testing of Fire Extinguishers. The letter on an extinguisher rating corresponds to the type of fire that extinguisher can put out while the number correlates to the extinguishing potential.

May 15, 2024 · But what do these fire extinguisher ratings mean? The numbers in the UL Rating are a relative measurement of how effective a given extinguisher is at fighting certain classes of fires, based on proper fire extinguisher training. A: The …

If you already know the UL rating for the fire extinguisher you need, click the specific rating below! If you're looking to learn more about UL Rated Fire Extinguishers, click the link below to view our helpful guide that breaks down the various classes of fires and what each rating means.

Mar 24, 2025 · Class A Rating: The number indicates the extinguisher's effectiveness in terms of water equivalency. For example, a 2A rating means the extinguisher has the equivalent extinguishing capacity of 2.5 gallons of water. Higher numerical values signify a larger capacity. Class B Rating: The number here is a measure of the extinguisher's coverage ...

Feb 22, 2024 · UL Rating on Fire Extinguisher Label. An ABC Fire Extinguisher might have a UL Rating such as 4-A:80-B:C. To decipher this rating, let’s break down the numbers and letters: 1. A – Water Equivalency Rating: The number before the ‘A’ represents the water equivalency rating of the extinguisher.

Extinguishers for Class D fires are labeled with a list detailing the metals that match the unit's extinguishing agent. Class A: Wood, Paper, cloth, trash, plastics (solids that are not metals). • The numerical rating for a Class A Fire extinguisher refers to …

Jul 12, 2024 · A fire extinguisher's letter class-action identifies the types of fire it can put out. The Underwriters Laboratory (UL) assigns ratings according to the extinguisher's use. Here's a list of common types of fires that ratings are associated with: Class A: Fires in combustible materials like wood, cloth, rubber, plastic, or paper

Mar 31, 2019 · The UL rating is broken down into Class A and Class B:C ratings. The number beside the letter A ranges from 1 to 40. This is the water equivalency for this extinguisher, where 1 equals 1¼ gallons.