The combustion chamber is made of vermiculite and chamotite – materials resistant to the highest temperatures, which at the same time protect the elements of the chimney and accumulate and distribute heat smoothly and continuously. Both the door with heat-resistant glass and the grille, which is most in contact with the flame, are made of cast iron. Glass allows you to contemplate the fire, controlling the gorenje process. Under the chamber there is an ash box with a pallet, which allows it to be emptied in full. The gas recirculation system is planned thanks to the regulators in the ashtray door and the gas flow regulator.