TT20S is equipped with elegant polished Brazilian soapstones, with particularly good heat-storing properties. Soapstone absorbs heat slowly and gives off the collected heat long after the fire has gone out. The soapstone is a pure natural product, whereby the appearance varies from stove to stove. Additional equipment can be purchased, such as swivel door for the wood compartment, where an associated fireplace set can also be placed. Shaped floorboard is also an option, which makes it easy to remove the plate for cleaning or when the oven is not in use.