Need to vent a hot shed, greenhouse, or chicken coop without running any electrical wires? This solar-powered fan kit is your perfect off-grid solution. The kit includes a 20-watt monocrystalline solar panel (about 13x13 inches) and TWO high-speed, metal-cased exhaust fans. The panel connects to the fans with a long, 10.8-foot cable (plus a 2.2-foot fan cable), giving you flexibility on where to mount everything. The fans are waterproof and built to last outdoors. How it works is simple: when the sun is out, the panel powers the fans. They spin at up to 3200 RPM, moving a lot of air (up to 242 CFM) to pull out hot, stale air and bring in fresh air. This helps reduce heat, control humidity, and remove odors. It's almost silent at only 30 dB. There's even a power cord with an on/off switch for manual control. You can install the fans as intakes or exhausts, depending on your needs. Important note: There's no battery in this kit. The fans only run when the solar panel is receiving sufficient sunlight. They'll stop at night or on very cloudy/rainy days. It's ideal for passive, daytime ventilation. It comes with mounting brackets, screws, and cable ties for easy installation on your greenhouse, coop, dog house, attic vent, or camping tent. A great way to improve air quality and comfort completely free of operating costs.