Andersen. Made for builders in the West, the 100 series product line is certified by Scientific Certification Systems for having a minimum of 40 percent pre-consumer recycled content by weight and for not releasing VOCs. The window is made from Fibrex, a blend of sawdust and polymer. The series is available with 50 glass options, including low-E and dual-pane. 800.426.4261. www.andersenwindows.com.