Harvia Linear 28 Wood Burning Sauna StoveThe Harvia Linear 28 Wood Burning Sauna Stove is a classic design made for medium sized saunas from 353 to 988 cubic feet. The sauna atmosphere you crave is met with a warming glow from the cast iron glass door amplifying those relaxation feelings. The fire chamber and combustion air channels are everything you expect from Harvia giving you a cleaner burn while heating your sauna quickly. Requires a minimum of 110 LBS of rocks 3 boxes.