Cozy Heat Thru-Wall Sauna HeaterCOZY has taken the craft of building a wood fired sauna stove to the next level. This Cozy Heat though the wall wood burning sauna stove is hand made in Estonia where sauna is a way of life and is perfect for intimate sauna spaces. Wood burning saunas are best for mild and long lasting heat, designed for pouring water over hot stones to create the perfect amount of steam. Its through the wall design allows you to feed firewood into the stove from