Feature: 1. POWERFUL POWER: Equipped with a 100W solar panel, it provides strong power, which makes the fan last for a long time and at the same time is energy saving and eco friendly. 2. DOUBLE FAN DESIGN: Adopting 12 inch double fan design to increase the exhaust efficiency and better heat dissipation, effectively lowering the indoor temperature and improving ventilation. 3. WATERPROOF: Processed with waterproof coating, it effectively prevents rainwater intrusion to avoid short circuiting or damage, ensuring the safety of the equipment, suitable for a variety of indoor and outdoor environments. 4. SAFETY GUARD: The fan is equipped with dual metal protective meshes to prevent small animals from being injured and protect the fan blades from normal operation, ensuring safety during use. 5. WIDE APPLICATION: This solar fan is suitable for indoor small chicken coops, greenhouses, sheds, pet houses and other places. Able to push out hot air and push in cold air to keep the air fresh and clean. Specification: Item Type: Solar Panel Powered Fan Material: ABS, Monocrystalline Silicon Weight: Approx. 550g / 19.4oz Product Size: Approx. 28x30x3cm / 11.0x11.8x1.2in Solar Panel Power: 100W (Without Storage Function). Package List: 1 x Solar Panel Powered Fan4 x Expansion Hose4 x Screw Note: Fan speed is greatly affected by sunlight. When the sunlight is very weak, the fan will work slowly or even stop working. There is no built in battery in the solar fan, and it only works during the day.