Heat furnace fan details

Features 1. This stove fan is driven by converting heat into energy and does not use any batteries or electricity. 2. The operating temperature range is about: 140°F/60°C~662°F/350°C, the higher the temperature, the faster it starts to rotate. NOTE: The temperature cannot exceed 662°F when using the furnace fan. 3. Can circulate heat in the room. 4. This cooktop fan is silent and quiet. Specifications: CFM: 180-210 Speed: 1100rpm Number of Blades: 4 Noise: ≤25dB Starting Temperature: 140°F / 60°C Operating Temperature Range: 140°F / 60°C~662°F / 350°C Material: Anodized Aluminum Overall Dimensions: 8.8 x 7.1 (Height*Width) Color: Black Package Includes: 1x 4-Blade Heater Furnace Fan