Triple-Pane Windows (IMAGE) DOE/Pacific Northwest National Laboratory Caption This image shows the installation of triple-pane windows in one of the Lab Homes on the campus of Pacific Northwest National Laboratory. Credit Photo by Graham Parker/PNNL Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.