This USA made wood fueled sauna stove is perfect for heating a small sauna. There is a 1″ lip around the top of the stove to hold hot rocks and you can enjoy the ambiance of the fire from the 5″x7 window. The stove has ring handles so the door and the damper can be operated without having to wear gloves. This kit comes with four 24″ long sections of 4″ stove pipe. Stove Material: 1/16″ and 1/8″ steel. Stove Pipe Opening Diameter: 4. Max Log Length: 17. Square Footage: up to 50 sqft sauna tent or 100 sqft traditional sauna. Country of Origin: United States of America.