Featuring a classic design and the latest technology, the Harvia M3 SL by Finlandia is among the world’s most exceptional wood-burning sauna stoves. The M3 SL allows bathers to feed the sauna from another room. The opening direction of the sauna stove door can be changed for ease of use and convenience. The Harvia M3 SL stove is perfect for small and medium-sized sauna rooms from 159-459 adjusted cubic feet (ACF).