Harvia Legend 240 Wood Burning Sauna StoveThe Harvia Legend 240 Wood Burning Sauna Stove is perfect for medium sized saunas between 353 and 848 cubic feet. The innovative structure that separates the combustion air and directs part of the air to the upper part of the fire chamber will give you a cleaner and more efficient way of burning. The large amount of stones integrated with the modern black steel grate structure gives this wood burning heater a longer lifespan. Requires 440 LBS of sauna