ECO-WORTHY 25W Solar Powered Attic Ventilator Gable Roof Vent Fan with 30W Foldable Solar Panel Solar powered gable attic vent has high efficiency brushless motor to keep you a quiet environment. Fully vents up to 2,200 square feet area, and provides up to 1960 CFM (cubic feet per minute) of ventilation. 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. The fan can work automatically at low voltage, so you also get great ventilation even in cloudy days. Solar vent cools your roof and also reduces the load on your air conditioning system, it will cut your cooling costs dramatically. Package includes: 1pc 25W Solar Gable Attic Vent & 1pc 30W Poly Foldable Solar Panel with 1 set Mounting Brackets The solar attic vent will coolyour 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. Idealexhaust ventilation fan for yourgarage orattic. Voltage: 4V - 17.2V Min Voltage to Operate: 4V Sq Footage/CFM: 1960CFM Min Operating Voltage of the Kit(25W Attic Fan + 30W FoldingSolar 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. 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) Foldingsize: 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 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 ofattic fan to solar panel&#039;s wire.