Features: 1. Solar Work: The solar panel makes the fan run fast in direct sunlight. Our fans are dedicated solar fans with long service life and energy saving. 2. Cooling & Ventilation: Our solar panel fans can push out hot air and push cold air in effectively lowering the indoor temperature and keeping the air fresh. This is an excellent ventilation solution for small chicken coops greenhouses sheds pet houses windows on hot summer days. 3. Easy to Carry: Small size easy to carry. No battery 100% silent green energy good for the environment and maintain air circulation. The waterproof design can effectively protect the fashion in the outdoors so that it can be used conveniently and quickly in the outdoors anytime anywhere. 4. Easy Installation: The solar panel exhaust fan is easy to install just connect the interface of the solar panel and the fan and put it in the sun you can install it anywhere you want. 5. Wide Range of Uses: Solar dual fans are suitable for kitchens greenhouses pet houses chicken coops attics ourist vehicles camping etc. Specification: Size: Approx. 160x165 mm /6.3x6.5 inche Ventilation: Approx. 120x120 mm /4.7x4.7 inch Output interface: USB plus DC Color: Black Material: ABS silicone Note: There might be a bit color distortions due to different computer resolutions. There might be a slight errors due to different hand measurement. includes: 1 Piece Exhaust Fan 1 Piece Solar Panel "