The First Alert PRO5 Rechargeable Heavy Duty Plus Fire Extinguisher is effective against the most common household fires. Ideal for wood, paper, fabric, flammable liquid fires and live electrical equipment fires. Uses a heavy duty metal head that's designed to exceed demanding needs. This heavy duty plus fire extinguisher can also be recharged by a certified professional when in use, ensuring lasting protection. Includes a heavy duty mounting bracket and strap to keep the unit secure. Meets UL standards. Portable and can be recharged by a certified professional when used. Made of a durable metal head that is designed to meet demanding needs. Also features a metal pull pin with a safety seal that deters accidental discharge and discourages tampering. The color coded gauge is easy-to-read, corrosion-resistant, and provides accurate measurement. Includes easy to follow, 4-step instructions right on extinguisher. The label is chemical resistant and water proof, so you do not have to worry about it deteriorating. Class A, B & C Fire Extinguishers are designed to put out three types of fires: combustible fires, flammable fires and electrical fires.