Our Omicron solar industry ventilation fan is perfect for ventilating hot spaces such as factory, attic, garage, cabin, RV, boat, basement, greenhouse, trailor or wherever ventilation is needed. Using our super cell 10-20 watt solar panel and 400m due power DC/AC brushless industry fan, the solar powered fan can reduce temperatures by 40-60 degrees and will pull 1200 cfm (cubic feet per minute) of air from your space. Installs easily in 400mm hole with no wiring needed. Fan automatically starts when the sun is shining on the solar panel. Quiet operation. comes with solar cable, more can be added.