Kidde ProPlus6L-K Class K/6 Liter Factory Wet Chemical Fire Extinguisher Filled Unit, RechargeableKidde ProPlus6L K ProPlus6L K Product Description Suitable for use on Class K cooking grease and oil fires. The move toward more efficient cooking appliances and the widespread use of unsaturated cooking oils dictates the development and use of new types of portable fire extinguishers. These wet chemical extinguishers are designed to deliver the agent safely on to the fire with a more gentle application. In addition the fire fighting agent has a