The charm of yesteryear outbreak reinvented by two students Grenoble… At the head of the company Finoptim, and David Baptiste Ploquin Lépiney patented insert for traditional open fireplace. This ingenious device can make it less harmful and more effective open fireplaces. The heat output is thus multiplied by 4 and emissions reduced by 80 %. The system is fully autonomous and removable. It consists of a set of placed between two rows of bricks metal tubes. The air rushes naturally before warming to be instantly restored to a very high temperature above the flames and smoke. The insert open double combustion adapts to any type of fireplace. The innovative home optimized and will allow millions of households with open fireplaces to comply with the new standards recommended by the Plan to protect the atmosphere.