Keep your spaces cool and well-ventilated with this efficient solar-powered fan set. Equipped with a 15W high-efficiency solar panel, this system powers 4-high-speed fans to create a strong airflow, effectively removing hot air and maintaining a comfortable indoor environment. The solar panel is built with a high-strength tempered glass surface and an aluminum frame, ensuring durability and resistance to harsh weather conditions. The fan's main frame is made of black mirror acrylic and ABS material, providing additional protection against corrosion, water, and rust. With a service life of over 10 years, this solar fan helps you save on electricity bills by maximizing solar energy capture. Installation is a breeze, thanks to the pre-drilled holes on the solar panel and the included 16.4FT extension cable, allowing you to place the fan in various locations such as greenhouses, chicken coops, sheds, and more. The fan also comes with a separate switch for manual control and a USB adapter for nighttime use. Specifications include a solar panel size of 13.7 x 9.2 in. single fan size of 4.72 x 4.72 x 0.98 in. air volume of 4 x 120.5CFM, speed of 3200RPM, noise level of 36dB, and operates at 12V DC. Experience efficient, energy-saving cooling with this versatile solar fan set.