... in attic,ventilation system,small room,cellar,greenhouse Solar Ventilator Solar Fan 12V 11W1. Energy free ventilation2. Used in attic,ventilation ... greenhouseWorking by solar. It can be widely used in greenhouse or factory.CE/3C certificate.Fan Voltage: 12V. Motor ... speed.Packing: 600*600*200mm(for ventilator itself),solar panel depend on the configuration. 2012 New Solar Ventilator Solar Fan 12V 11W