70W New Design Solar Attic Fan Energy-Saving Industrial Fan with Battery Can Recharge for Wholesales

70W New Design Solar Attic Fan Energy-Saving Industrial Fan with Battery Can Recharge for Wholesales. High Efficiency Ventilation: Up to 2040CFM air volume meets diverse ventilation needs. 25-Year Solar Panel Life: High-efficiency monocrystalline panels last up to 25 years. Low Noise DC Motor: Brushless DC motor ensures low noise and 30,000-hour life. Corrosion Resistant Build: Galvanized steel base and SUS304 fasteners for durability. Adjustable Installation: Adjustable bracket fits roofs with different slope angles. Zero Running Costs: 100% solar powered, saving energy and environmental protection. Easy Roof Installation: Wing nut design simplifies and secures roof mounting. 5-Year Product Warranty: Comprehensive 5-year warranty on the main fan unit.