FiberFrame commercial rated fiberglass windows, with their superior design, are ideal for building owners who keep buildings in their portfolio as long term investments. FiberFrame commercial warranty is the best in the industry. FiberFrame partners with American Institute of Architects (AIA) by presenting continuing education credits with architectural firms across the country. We continue our innovative approach to windows and doors even to this day by bringing strength, energy savings, and beauty to all of our products. Our unique partnerships with industry leaders allow us to offer you the very best energy efficiency in glass, more frame color choices than any other manufacturer, and the greatest strength of materials.