30W Solar Fan - Features two fans enclosed in a sturdy double-layer metal guard, preventing accidental contact with blades while keeping pets and wildlife safe. The solar panel comes with pre-drilled holes for straightforward mounting. Just angle it toward the sun for immediate operation. IPX7 Solar Fan - internal components—including the motor, circuit board, wiring, and bearings—are sealed with a protective coating to prevent moisture and short circuits. Solar Fan for Chicken Coop - Perfect for reducing heat and improving air quality in chicken coops, greenhouses, storage sheds, pet shelters, or as a window exhaust fan. effectively exhausting hot air, inhaling cold air, helping to lower temperatures and maintain healthy airflow. Versatile Placement with Extended Cable - Comes with an 9.84-foot power cord for flexible installation. indoors or outdoors. Dual-Drive Strong Wind - equipped with dual 4.7in fan blades, the maximum speed is 3500 rpm, and the single machine outputs 180CFM*2 superimposed airflow, which can quickly replace the hot and humid air in the confined space, No battery is included