First Alert Tundra Fire Extinguishing Spray's discharge time is 4 times longer than traditional fire extinguishers. Tundra Fire Extinguishing Spray is a strong, accurate, fast and effective home safety tool to extinguish fires. Fires can double in size every 30 seconds (U.S. Fire Administration) and it is during those precious seconds a household fire can spread, putting lives and even your home at risk. Tundra Fire Extinguishing Spray is powerful and effective and easy to use, just point and spray. It works on household fires including those involving paper, fabric, wood, cooking oils, electrical appliances and equipment. If you're looking for a fire safety product that is easier to handle during an emergency, Tundra Fire Extinguishing Spray is the fire extinguishing product for you.  UL Rating: 1-A:10-B:C