Features: Featuring a high efficiency monocrystalline 25W solar panel and double cooling fans, this 12V solar exhaust fan delivers stable energies conversion with enhances thermals management for prolonged operations. The plastic construction houses twin fan blade optimized for airflows circulation, combining solar systems components with space saving for easy installation. for owners, greenhouse operators, and outdoor enthusiasts seeking ventilation solution powered by renewable energies sources. Perfect for attics, workshops, or camping vehicles requiring temperature regulation through solar powered air circulation in sun exposed environments. Engineered with universals compatibility for offgrid setups, this double fan cooling unit reduces carbon footprint while maintaining consistent performances across varied solar lighting conditions. Specifications: Silicon wafer type: single crystal silicone Solar panel size: 330x360x2.5mm Fan size: 308x160x25mm power: 25W Open circuits voltages: 20V power voltages (vmpp): 18v Short circuit current: 1.5A power current (implp): 1.1A Package Includes: 1Set Solar Panel with double Fan note: Please allow 0-1cm error due to manual measurement. make sure you not mind before bid. Due to the differences between different monitors, the Pictures may not reflect the actual of the item.