The exterior design features a striking combination of straight lines, massive yet elegant steel with the raw sauna rocks. The internal and external shell is completely made of the best quality stainless steel. Terminal box: high-grade steel. Stone filling: 25 kg incl. Service friendly unit assembly system. The heating elements are mounted on a rack and may be conveniently removed without the need to remove the rocks. Optimised ratio of radiated heat and convection due to the appropriate amount of stones.