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). U.S. coast guard approved when used with included plastic mounting bracket with strap. Unit dimensions: 3.1" width x 14.2" height. 10 year limited warranty. Rated 10-B:C. Meets UL standards.