Marvin Windows and Doors is a family owned and operated company. Founded by George Marvin in 1912, his hard work, ingenuity and integrity would become the pillars on which Marvin group of companies would grow. The countless stories of George Marvin’s philanthropic work continue to inspire those who carry on the family name.
Under the leadership of George’s son, Wm. S. “Bill” Marvin, Marvin Windows and Doors grew from a few dozen employees in the 1950s to more than 4,000 today. Marvin family of companies is proud to be the world’s largest made-to-order window and door manufacturer and even prouder of our reputation for quality to excellence in the small town of Warroad in northern Minnesota.
Integrity Windows and Doors is part of the Marvin family of brands. Employing the values and commitment to quality that made Marvin the premier manufacturer of made-to-order windows and doors, Integrity was created to set a new industry standard in performance and durability.
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