The Narvi Sauna Stove is known for its quality, capable of producing great steam for larger saunas where bigger groups can relax. 24kW- For sauna rooms from706 to 1236cubic feet 50kW- For sauna rooms from1589 to 2472cubic feet Required sauna stones sold separately. The Narvi Sauna Stove is known for its quality, capable of producing great steam for larger saunas where bigger groups can relax.Experience the warmth of the fire as it radiates through the glass door during your sauna session. The sturdy outer casing of the sauna stove is painted in black for a bold appearance.This stove is robust and designed for longevity, ensuring that it will endure for many years while creating an authentic ambiance in the sauna. Installation and Operation Manual Sauna room sizes:24kW-706 to 1236cu. ft.50kW-1589 to 2472cu. ft. Stone requirements:24kW- Minimum of 143 lbs of stones50kW- Minimum of 220 lbs of stones 24kW- Minimum of 143 lbs of stones 50kW- Minimum of 220 lbs of stones Designed, engineered, and made in Finland Maximum Firewood Length: 13" (33 cm) Diameter of Firewood: 2" (5 cm) Flue Connection Location: Top or Back Minimum Ceiling Height: 87" (220 cm) Safety Distance (Front to Back): 59.9" (152 cm) Safety Distance (Left to Right): 48.7" (124 cm) Stone Capacity: 143 lbs (65 kg) Shipping Weight with Stones: 474 lbs (215 kg)