25W Solar Powered Attic Ventilator Gable Roof Vent Fan with 30W Foldable Solar Panel Feature The solar attic vent will cool your roof and also reduces the load on your air conditioning system, it will cut your cooling costs dramatically. The fan can work automatically at low voltage, so you also get great ventilation even in cloudy days. Ideal exhaust ventilation fan for your garage or attic. 25W Solar Attic Vent Voltage: 4V – 17.2V Min Voltage to Operate: 4V Sq Footage/CFM: 1960 CFM Min Operating Voltage of the Kit(25W Attic Fan + 30W Folding Solar Panel): 12V Shell Material: High Strength 304 Stainless Steel Blades Material: High Strength Aluminum alloy Bearings: Roller bearings Motor Life Span: more than 10000H The attic ventilator fan comes with pre-installed 8 inch solar cable with connector for connecting to solar panel conveniently. 30W 12V Poly Foldable Solar Panel Max Power at STC: 30W Max power voltage(Vpm): 16V Short circuit current (Isc): 1.83A Max power current(Ipm): 1.67A Open size: 27.8*13.8*0.7in(707x350x18mm) Folding size: 13.8*13.8*1.5in(350x350x38mm) Frame: heavy duty aluminum Kind of glass and its thickness: low iron, high transparency tempered glass of 3.2mm SLA Battery Voltage: 12V Easy Installation 30 watt poly foldable solar panel comes with adjustable angle mounting brackets and 1pc 16 feet soalr cable, you can adjust the optimal angle to get the best efficiency. It is a ready-to-use plug. You just require folding up the foldable solar panel and face its solar surface direct to sun, then connect the connector of attic fan to solar panel’s wire.