1、Heating Power Supply: Using heating and power supply fans, no battery or electricity, environmental protection, low consumption. 2、Hot Air Horizontal Transfer: This fan is different from the vertical heat of a standard furnace, which uses blades to transfer the hot air horizontally. 3、Automatic Start: The fireplace fan can start automatically, and the speed can be adjusted according to the furnace temperature. 4、Aluminum Alloy Material: The fan base and blades are made of aluminum alloy, which will not rust or corrode. 5、Operation Does Not Disturb: This is an easy to install fan, the operation will not disturb your study, work or relaxation time. 1 x Double Head Eight Leaf Fan Item Type: Dual Head Stove FanSize: Approx. 20.5 x 10.5 x 13.5cm / 8.1 x 4.1 x 5.3inBase Length: Approx. 10.5 / 4.1inBase Width: Approx. 7.2cm / 3inBlade Width: Approx. 4.2cm / 1.7inMaterial: Aluminum AlloyWorking Temperature: 50℃-335℃Air Flow: About 220cfmNoise: 15-20dBPower Supply Mode: Thermal Sensor