Garage/Workshop Fire Extinguisher. FX340GW-2. Due to the volume of flammable liquids normally present in garages & workshops, a higher rated fire extinguisher is recommended. This fire extinguisher fights fires common to the garage and workshop such as paint, wood, gasoline & energized electrical equipment. This unit is easy to use and has a 10-year warranty. Multipurpose Dry Chemical. UL listed. UL rated 3-A, 40-B:C. Supplied with wall hanger. Monoammonium Phosphate. 10 year limited warranty.