This heavy-duty First Alert PRO5 Fire Extinguisher features a commercial-grade metal valve and the trigger is UL rated 3-A: 40-B: C and exceeds minimum 2-A: 10-B: C. Code requirements. It s ideal for home offices small businesses and light manufacturing applications and fights wood paper fabric flammable-liquid and live electrical-equipment fires. The color-coded gauge provides accurate measurements to ensure the extinguisher is ready to use in an emergency and the metal pull pin and safety seal help prevent accidental discharge and discourage tampering. A bracket and strap are included for secure mounting. The chemical-resistant and waterproof label features easy-to-read instructions and won t deteriorate over time. The extinguisher fits easily inside a standard firebox.