Great Lakes Windows 

     delivers the highest quality and service, 
100% on time and complete, for any window, any size, to any customer in the Great Lakes service area in 10 days or less!

 Visit www.greatlakeswindow.com/ to find out more!

The vinyl mainframes of Great lakes Window^®

windows are filled with patented^† R-Core^® insulation (pre-expanded high-density solid-polyurethane), the same type used in many refrigerator/freezer doors. It prevents voids and settling, resulting in even distribution for the maximum insulating barrier.

†U.S. Patent Number: 4,516,356

Great Lakes Custom Windows are Energy Star efficient.

Your investment in ENERGY STAR windows will pay for itself over time, and then the savings is money in the bank every year! 

ViWinTech Windows

When you purchase your ViWinTech windows, you'll find them so easy to care for. The stain resistant properties of our Vinyl windows allow you to clean common household soils and spills simply and easily.