Mathews Brothers has been making window products for New England since 1854. Our manufacturing plant in coastal Belfast, Maine uses state-of-the-art equipment and materials to build vinyl and contemporary composite windows and doors.
Mathews Brothers Vinyl Window Products do more than just let the light in and keep the cold out. They give character to your home that is a reflection of your personal taste and lifestyle. Our wide range of windows lets you find a product that is perfect for your home and your wallet. All of our windows are made in America, using American-made components. JB Sash has been working with Mathews Brothers for nearly 70 years. We work closely with the factory to provide a quality vinyl window and door solution to our customers.