Feature: 1. Efficient Aerair Exchange: The professional solar powered exhaust vent fan can quickly remove the dirty indoor aerair and keep the indoor aerair freshness. 2. Solar Powered: The solar powered exhaust vent fan utilizes solar energy as energy source, no external power supply, energy saving and environmental protection, low cost. 3. Multifunctional Design: Solar panel powered fan can be installed in the kitchen, bathroom and other places that need exhaust ventilation, effectively improving indoor ventilation. 4. Duct Connection: Solar panel powered fan adopts specially designed flange interface, which is convenient for connecting with exhaust ducts and makes aerair circulation smoother. 5. Green Energy: Solar panel powered fan adopts solar energy as the driving energy, which reduces the dependence on traditional energy and conforms to the concept of sustainable development. Specification: Item Type: Solar Powered Exhaust Vent Fan Material: Polycrystalline Silicon Weight: Approx. 518g/18.3oz Fan Size: Approx. 12x12x10cm / 4.72x4.72x3.94in Power Cable Length: Approx. 90cm/35.43in Power (pmax): 5W . Package List: 1 x Solar Panel 1 x Chassis Fan Set1 x Protective Net 1 x Component8 x Screw 8 x Nut Note: 1. Solar Panel Without Power Storage Function.2. Manual measurement please allow some error.