Chimney & Heat Shield Set for Out The Back Wall - Barrel SaunaWood Burning Stove Through Back Wall For Barrel Saunas Do you want an authentic wood burning sauna experience? You need a suitable chimney and heat shield set for your Canadian Timber CT Serenity barrel sauna. You also need a Harvia M3 wood burning heater or another wood burning heater to go along with this set. Useful Links Chimney & Heat Shield Set for Out The Back Wall Measurements Diagram Chimney & Heat Shield Set for Out The Back Wall Barrel