Features:  - Ttm heat powered stove fan - increases the efficiency of your freestanding stove oven or wood/ log burner to generate warmth economically.  - Self-powered - a thermoelectric module acts as a small Generator to power the fan's motor. No batteries or electricity required.  - Save energy: tested and pro ven to save you up to 12% in fuel with more efficient distribution of heat from your wood stove. Improved warm air circulation results in greater comfort and less fuel consumption from your stove.  - Operates automatically between 60-350℃ -Self-Regulating speed according to the temperature in your room. Circulates 150-180 CFM. - Black aluminum construction - extremely quiet operation, compact size, no installation required. Black aluminum construction with four large blades and carry handle - size: 4. 5'X7.5'X3', weight: 0.55kg.     Specifications:  Blade Qunatity: 4.  CFM: 150-180CFM.  Speed: 1100RPM.  Noise: ≤ 25db.  Start Temp.: 60℃.  Work Temp.: 60℃-350℃.  Material: Aluminum.  Color: Black/Gold/Silver/Rose/Bronze/Grey/Red/Blue.     Package Included:  1 x Stove Fan