ABC or Multipurpose extinguishers utilize a specially fluidized and siliconized mono-ammonium phosphate dry chemical. They chemically insulate Class A fires by melting at approximately 350°F and coat surfaces to which they are applied. They smother and break the chain reaction of Class B fires and will not conduct electricity back to the operator. • Dependable Drawn Steel Cylinders• All Metal Valve Construction• Easy and more economical to maintain and service• U/L & U.S. Coast Guard Listed• Bar Coded and Bi-lingual Labels• Temperature Range -65°F to 120°F• Manufactured and Tested to ANSI/UL Standards ISO-9001:2000 / ISO-14001:2004 Certified• UL LISTED AND USCG APPROVED• Note: All extinguishers are USCG approved with bracket listed on UL label