Groza is a modern cast iron stove for small and medium sauna rooms. The furnace has a robust prefabricated construction, in addition to threaded and welded joints, parts made of alloyed cast iron. The furnace consists of two chambers separated by a flame arrestor. Furnace radiator protrusions directed toward the depth of the furnace increase the area of contact between the fire and the furnace and the efficiency of heat transfer. To increase the heating surface area of the stones, cast iron spikes are installed on the outside of the furnace, pointing upwards. Bath stones, cast iron cores or cast iron cones are placed between the needles. Cast iron needles increase water evaporation. By opening the top lid of the heater and pouring water on the hot stones, you will get plenty and soft steam. Holds 40kg of stones. Designed for saunas up to 24m3. Exterior finish - natural stone - serpentine. Panoramic doors. Wide outer fireplace - 200mm. It is possible to install an additional firebox -120mm (sold separately).