Solar Duct Fan 12 14 20 Inch Dual Power Supply Solar and Mains High Airflow OEM ODM Custom Ventilator

Solar Duct Fan 12 14 20 Inch Dual Power Supply Solar and Mains High Airflow OEM ODM Custom Ventilator. Dual Power Source: Operates on solar power and switches to AC adapter for 24/7 cooling. No Lithium Battery Design: Eliminates explosion risks and reduces maintenance costs compared to battery models. Remote Control Operation: Allows on/off and setting adjustments from a distance for large spaces. High Airflow Efficiency: Delivers 7000 CMH airflow with 8.2 M/S wind speed to cover 300 sqm. Durable Construction: Made of galvanized steel with anti-rust coating and 12-level wind resistance. Low Noise Operation: Operates at less than 70dBA for a quiet industrial environment. Extended Warranty Option: Standard 2-year warranty with optional coverage up to 36 months.