Smoked glass burning tube. The black enamel processing increases the amount of far infrared rays by about 20%. Convenient carrying handle type. Color: (H) Dark Gray; Heating Output: 2.87 kW - 2.44 kW; Applicable tatami mats; Concrete (gathering): 10 tatami (16.5 sq m); Wood (detached): 8 tatami (13.0 sq m); Oil tank capacity: 3.6 L; Size: H460 x W312 x D312 x D312 x D312 ft (312 x D356 mm Quantity: about 7. 11.0 lbs (5 kg); Features: Electronic ignition, flowing core, spill plug, easy 2 locks, odor saving fire extinguisher, deodorizing ring, oil sign, automatic fire extinguisher for refueling, heat resistant rack: 29 types; Batteries (sold separately): 2 AA (4 pieces).