Feature:1. HIGH EFFICIENCY COOLING: The solar exhaust fan can provide strong wind to keep the space cool and comfortable, ensuring efficient cooling and wind circulation.2. ENERGY SAVING SOLUTION: The 20W solar panel serves as a reliable power source, which reduces power costs, minimizes environmental impact, and saves energy and power.3. SIMPLE INSTALLATION: The solar panel vent fan kit is suitable for round ducts, which is easy to install quickly in any ventilation system without professional tools and skills.4. ROUND BANNER: It comes with a mounting baffle, which can effectively prevent birds from entering and nesting inside the exhaust fan, ensuring safety and reliability.5. WIDE APPLICATION: It is ideal for different spaces and environments such as attics, greenhouses, RVs, boats, chicken coops, pet houses, sheds, etc. to meet various needs.Specification:Item Type: Solar Powered Exhaust FanMaterial: Monocrystalline Silicon, ABSSolar Panel Power: 20W (Without Power Storage)Solar Panel Size: Approx. 14.5x14.5cm / 5.7x5.7inExhaust Fan Diameter: 12cm / 4.7inExhaust Duct Length: 5.5cm / 2.2inExhaust Duct Diameter: 9.5cm / 3.7inVoltage: 5V.Package List:1 xSolar Panel 1 x Exhaust Fan1 x Exhaust Fan Round Baffle4 x Screw4 x Expansion Bolt