VEVOR Solar Powered Fan, 15W Solar Panel with 2 Fans, Adjustable Solar Panel Angle, 2668 RPM High-Speed, Flexible Installation, Fast Air Exchange for Greenhouse, Grow Tents, Chicken Coops, SheltersSolar Powered, No Wiring NeededSunlight-Responsive SpeedMore Even Air CirculationFlexible DIY InstallationOne Unit for Multiple SpacesAluminum Alloy HousingAirflow: 120 CFM (Each) / 240 CFM (Total),Noise Level: 45 dB,Speed: 2668 RPM,Fan Quantity: 2 PCS,Item Dimensions (Fan): 11.81 x 6.30 x 1.50 in / 300 x 160 x 38 mm,Item Dimensions (Solar Panel): 12.20 x 12.20 x 0.63 in / 310 x 310 x 16 mm,Item Model Number: 15W-XC12025X12Z,Rated Power: 15 W,Output Voltage: DC 12V,Item Weight: 3.86 lbs / 1.75 kg