Solar Powered Operation: Matched 25W solar panel with DC direct connector powers the solar powered fan automatically in sunlight. No voltage conversion or grid power required. Suitable for backyard greenhouses and farms, helping reduce wiring Adjustable Solar Panel Angle: Angle-adjustable panel allows flexible mounting and alignment with seasonal sunlight for steadier output. Note: Fan speed depends on sunlight intensity. In weak sunlight, it may slow down or stop. No built-in battery; operates in daytime only Dual-Fan Air Circulation: Four high-speed DC fans deliver up to 440 CFM total airflow in strong sunlight, helping speed up air exchange in enclosed or semi-enclosed spaces. Designed for efficient ventilation as a solar exhaust fan Built for Hot & Humid Areas: Double-layer metal guard helps block leaves and debris. IP65 rating suits humid greenhouses and coops. Tempered glass panel supports long service life. The solar greenhouse fan is about 45 dB, less likely to disturb animals

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