There are basically four different types or classes
of fire extinguishers, each of which extinguishes
specific types of fire. Newer fire extinguishers use a
picture/labeling system to designate which types of
fires they are to be used on. Older fire extinguishers
are labeled with colored geometrical shapes with
letter designations. Both of these types of labels are
shown below with the description of the different
classes of extinguishers.
Additionally, Class A and Class B fire extinguishers
have a numerical rating which is based on tests
conducted by Underwriter’s Laboratories that are
designed to determine the extinguishing potential for
each size and type of extinguisher. Click on any of
the topics listed below for additional information
that may be helpful to know.
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