Harvia sauna stones are selected according to old traditions and convey a genuine sauna atmosphere. Stones in the range of 50 to 100 mm are suitable for wall-mounted heaters with a low power output. Harvia sauna stones provide good and soft heat. Split-face sauna stones are the only correct stones for electric heaters and woodburning stoves, because they can store lots of heat and the water evaporates efficiently from the wide surface of fracture. Only for electric heaters Harvia sauna stones are selected according to old traditions and convey a genuine sauna atmosphere. Stones in the range of 50 to 100 mm are suitable for wall-mounted heaters with a low power output. Harvia sauna stones provide good and soft heat. Split-face sauna stones are the only correct stones for electric heaters and woodburning stoves, because they can store lots of heat and the water evaporates efficiently from the wide surface of fracture. Only for electric heaters