Not every home is designed the same way (i.e., having a fireplace built into a wall). When you want to install a wood stove or even a free-standing fireplace, you are going to need a way to get that wood-burning smoke and exhaust safely outdoors. What you need is stove pipe. Connecting from the exhaust port on your wood burner, stove pipes connect your wood burner to your existing chimney of chimney pipe. Note: Never use stove pipe as chimney pipe. They are built to different standards and using stove pipe in the place of chimney pipe could result in a fire.