Mathews Brothers Combines Tradition and Technology.
America’s oldest window manufacturer, Mathews Brothers of Belfast, Maine, has been a part of the New England architectural landscape since Read More


Lasting Beauty.
EnergyCore is perfect for design-conscious homeowners with an array of optional colors and realistic looking interior wood grains. Proprietary exterior coating technology ensures long-lasting beauty. Read More


Make the Right Choice.
Different climates call for different components and accessories. EnergyCore is available in a variety of configurations, boasting superior efficiency when paired with high-performance glass and warm edge spacers. Read More