Feature: 1. Environmental Protection: Powered by heat, no battery or electricity is needed, reduce emissions by reducing fuel consumption. 2. 4 Blade Design: Stove fan can increase comfort faster. At lower furnace temperatures, the airflow and speed are higher. 3. Horizontal Transfer Of Hot Air: Different from the vertical rise of heat in a standard stove, the stove fan uses its blades to transfer the hot air horizontally. 4. Automatic Start Design: The fireplace fan can start automatically, and the speed can be adjusted according to the furnace temperature. 5. Low Noise: Well crafted blades, truly silent operation, no loudly blower noise like other fans created, very practical. Specification: Item Type: Stove Fan Material: Aluminium Alloy Operating Temperature Range: 176-482℉(80-250℃) Air Flow: 170-190cfm Noise: <25dB Power Supply Mode: Heat sensor . Package List: 1 x Stove Fan1 x Trilingual Manual Note: The temperature should not exceed 350°C (662°F).