Corrosion-resistant metal valve and trigger, large, easy-to-read color-coded pressure gauge. Sodium bicarbonate extinguishing agent. Used to fight flammable liquids and electrical fires(Types B and C). US coast guard approved when used with included plastic mounting bracket with strap. Unit dimensions 3.1 in W x 14.2 in H. 10 years limited warranty. Rated 10-B:C. Meets UL standards.