It is a product that makes it possible to raise the temperature efficiently by stably stacking the sauna stones, which are indispensable for low-temperature, around the chimney of the sauna stove, which becomes hot. <Point> foldable and thin, and can be stored in the combustion chamber of the wood stove "tanzawa". * The screw fastening when assembling has been improved to one metal screw in the fourth photo. When < size > unfolded: Length 250mm × Width 239mm × Height 220mm * The color may look slightly different from the actual product depending on the monitor and PC environment.　* Some products use images provided by the manufacturer for some product images, so specifications are subject to change without notice.