Mono-ammonium phosphate extinguishing agent. Effective against wood, paper, fabric, flammable liquid and live electrical fires (Types A, B and C). Commercial-grade metal valve and trigger. Rugged construction and extra-large capacity for commercial and industrial use. Fits standard fire boxes. Large, easy-to-read color-coded pressure gauge. Mounting bracket and strap included. Rated class 4 - A:60 - B:C. Meets UL standards. Boxed.