Features: Powered by 8W solar panel, this 4 inch exhaust fan delivers efficient ventilation with a brushless motor for quiet , ideal for greenhouses, coops, and outdoor spaces requiring odor control and management. Featuring a 5.9x5.9 inch panel and 3.86 inch duct, the fan's compact design and 16ft cable easy installation in various settings without external power sources, while its plastic construction durability. Ideal for conscious homeowners, farmers, and pet owners seeking sustainable for enclosed areas like sheds, kitchens, or chicken coops. Perfect for ventilating sunlit spaces such as greenhouses, workshops, bathrooms, and attics where natural air is essential during hours. Designed for daytime use with solar dependent , this energy efficient ventilation eliminates odors and moisture while supporting off through renewable solar power. Specifications: Solar panel : single crystal silicon + aluminum alloy Output : 12V0.66A : 5.5x2.1mm male (center positive electrode) Line length: 490cm/16ft, fan parameters, fan size: side length 15x15cm, thickness 10.7cm, circular tube diameter 9.8cm, : 12V0.2A, speed: 3600r/min Package Includes: 1x 12V 8W solar panel 1x 15x15cm exhaust fan note: Note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.