17W SOLAR PANEL: Our solar panels are encased with tempered glass and aluminum frames for excellent corrosion and weather resistance. With premium monocrystalline solar cells, the conversion rate is up to 22%. The solar attic fans come with 20AWG(0.8mm in diameter) copper wire which reduces the loss of power so that the fan can operate even in weak sunlight.DC BRUSHLESS FAN: These solar fans have powerful brushless motors that are more stable, less prone to breakdown, run with less noise, and have a three- span compared to brush fans. Its speeds up to 1986rpm which offers superior shed ventilation capabilities. The detachable front panel and check valve make the fan perfect for wall, glass, and ceiling mounting.ADJUSTABLE BRACKET: Solar panels need different positions and angles in winter and summer to maximize the use of solar. Our solar chicken coop fan set comes with fixed and adjustable brackets, allowing you to optimize its position to capture the maximum amount of sunlight throughout the day.Say goodbye to noisy exhaust fans! Our brushless exhaust fan features high and whisper-quiet, it ensuring your peaceful environment is maintained.Made of high-grade monocrystalline solar cells with 22% conversion efficiency. High-quality materials, and a durable structure, makes it last up to 20 years.Color: WhiteMaterial: plasticPackage Contents:1 x Exhaust Fans1 x bracket1 x solar panel1 x screwsOnly 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.