ID 251331483 © Laupri | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
air attic background blue building buildings construction control cooling efficiency energy environment equipment exhaust factory heat home industrial industry metal metallic motion out outdoor outside residential roof roofing rooftop rotary rotate rotating saving sky spin stainless stale sustainable technology temperature top turbine turning vent ventilate ventilation ventilator wind winddriven windpowered