The Window Source had the pleasure of replacing 9 windows on this Lawrenceville, GA home. The customer wanted to break up the project and start with the front 9 windows and chose the 6000 Series. Our 6000 Series windows are double-hung with double pane glass. Double Pane glass on all TWS windows come filled with Argon Gas and coated with LowE. When upgrading from single pane windows, Energy Star rated double pane windows can save Augusta homeowners an average of $40 per month on utility cost. Start saving with energy efficient windows from The Window Source Augusta. Interested in Double Pane replacement windows in Washington, GA? Give us a call 706-310-5083.