No electricity needed for the KARHU 20 wood burning sauna heater—perfect for cabins or remote locations. Specifications:

• Basic wood burning heater
• Sauna size: 282-702 cu. ft.
• Heater size: 17" W x 28.75" H x 18" D
• Rock capacity: 70 lbs
• Heater weight: 99 lbs
• Flue Opening: 4.5"
• Safety Distance FRONT: 19.6"
• Safety Distance SIDE: 11.8"
• Safety Distance BACK: 11.8"
• Safety Distance CEILING: 51.2"