The air is admitted through the holes in the crests of the corrugated walls. This provides a cross draft to make the fuel burn away at the bottom of the pile. As the fuel burns away, it is being lowered from above to the fire. This is how long burning is accomplished. The heat can be regulated from very high to very low. The heat is constant, because of the steady burning of the fuel. The stove will not produce creosote, unless the operator closes off the drafts unreasonably low. Green and wet wood will burn in the Sedore Stove, if the fire is started with fairly dry wood, because the wood is drying before it reaches the fire, however, green wood is not recommended. The corrugated walls do not need bricks to prevent warping; the heat transfer is the best possible, also increasing strength.