Description: Compact Size: 6.7 x 4.72 x 7.48 inches, the material of the fan is aluminum. No Batteries or Electricity required: The fan uses heat from the surface to , adjust its speed automatically with the surface temperature. 5-Blade, Large Air Volume: Upgrade 5 blades, diffuse warm air throughout the whole room. Just place the fan on a smooth flat surface of your top, near the side or back of the stovepipe. Whisper-quiet: The only moving part is the blade assembly. You don't even know the fan is there,but you FEEL the WARMTH! Less Consumption, More Efficiency: The fan will help reduce the fuel consumption and make the room warmer quickly. Specification: Material: Aluminium Air Volume: 180-210 Blade: 5 blade Wind speed: 800-1100rpm Noise: ≦35dB Working temperature: 60-350℃ Net weight: 0.62kgs Product size: 17x12x19cm/ 6.7x4.72x7.48 inch Package Includes: 1 Piece Fan Note: Recommended surface temperature is between 64℉ - 660℉ (65℃ - 350℃). Temperatures above this range may damage the fan and the electricity generating units. Never handle the base of the fan, do not set the fan down on an unprotected surface when hot. To move or carry the fan, always use the extendable handle while wearing gloves . Keep the fan away from small children when in use.