This solar powered fan kits equipped with 15w High efficiency solar panels, Dual fans design, The solar panel fan works by absorbing sunlight, it can work efficiently during the day, reducing the load of the air conditioning system, environmental protection, energy saving, environmental protection and cost reduction.it is a perfect ventilation solution, DIY Cooling in this hot summer to reduces the indoor temperature and keeps the air . 100% waterproof and rustproof solar powered fan kit. The solar panel with tempered glass surface and aluminum frame can resist all weather, sturdy and durable. The fans equipped with hard plastic frame and stainless steel cover net, completely waterproof and rustproof. Featured dual is rated at 67, 000 hours. High efficient 15w solar panels with dual fans allow to power fan at high speed even on cloudy days. Please note that the solar fan is solar powered, it cannot store electricity. It can run at low speed even in weak sunlight, it will go into high to 240 CFM in full sunlight, please expose it to full sunlight, the solar fan will turn off automatically when the sun goes down. The solar fan comes with a extension cord so you can install it anywhere. Such as greenhouse, chicken house, shed, dog house, window vent, barn, cowshed, , attic, etc. Material: aluminum colour: black Package Contents: 1 x solar panel 2 x Exhaust Fans 1 set installation accessories Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.