4 Watt Resin Solar panel and 12cm dc fan solar ventilation kit,Ideal for providing gentle to moderate solar ventilation in greenhouses,summerhouses,conservatories etc,,easy to use,simply place the panel in a sunny position,connect to the fan and when its sunny the fan will spin and ventilate the room,easy to install,the panel can be fixed into position using either glue or velcro and the fan has fixing holes in all four corners for easy fixing to walls if required,the panel is fitted with 3 metres of cabling which can be easily extended if required and it measures approx 200mm x 125mm, a terminal block is also provided for connecting to the fans cabling,price includes uk delivery.