VEVOR Solar Powered Fan, 20W Solar Panel with Battery Storage, 220 CFM Airflow, Adjustable Panel Angle, 2030 RPM High-Speed, Fast Air Exchange for Greenhouse, Grow Tents, Chicken Coops, Shelters

Day & Night Operation: Solar powered fan with built-in battery runs on solar energy by day while charging, and continues working at night or on cloudy days for 24-hour ventilation. Helps reduce nighttime stuffiness and ammonia buildup,Adjustable Angle: Angle-adjustable panel allows flexible mounting to match sunlight and installation position for stable output. Fan speed varies with sunlight and increases in stronger sun to help move out warm air,Air Circulation: High-speed DC solar exhaust fans deliver up to 220 CFM total airflow in strong sunlight, helping speed up air exchange in enclosed or semi-enclosed spaces,Built for Hot & Humid Areas: solar vent fan with double-layer metal guard helps keep out leaves and debris, IP65 rating suits greenhouses and chicken coops, tempered glass panel supports long service life, about 45 dB is less likely to disturb animals,Flexible Installation: The exhaust fan includes brackets, screws, expansion anchors, and cable ties for mounting on roof, wall, or vent opening, works with small greenhouses, grow tents, chicken coops, and small livestock shelters needing air exchange