Product Structure: 1.Metal handle 2. Heat sink 3.Bimetal thermal insulation device Product Specification: 1.Model: BLFS 2.Color: black 3.Powe supply equipment: thermoelectric module (heat powered) 4.Airflow :Aluminum 5.Airflow: 203CFM 6.Start temperature: 40 ° C 7. Working temperature: 50-370 ° C 8.Noise level: 15-18db 9.Recommended distance: 10-15CM Product Features: 1. Automatic adjustment: the fireplace fan can be started automatically, and the speed can be adjusted according to the temperature of the furnace. 2. Low energy consumption: low consumption, high efficiency; increase the room temperature by 41%, save fuel cost up to 16%; no battery or power supply, more environmentally friendly. 3. Heat powered Fan for stove do not use batteries or electricity to increase the heating efficiency of your stove This allows the warm air to flow through your room faster. Working Principle: The power of the power of the temperature of the Fan This is also called seebeck effect Attention: The Heat powered stove Fans does not bring direct temperature increase but only a tool to accelerate the heat transfer of the chimney.