Founded in 1947, MI Windows and Doors is one of the nation's largest manufacturers of energy-efficient vinyl and aluminum windows and sliding glass doors. The company’s manufacturing facilities are strategically located in Pennsylvania, Texas, and Arizona, allowing them to offer a broad spectrum of windows and doors that meet the unique architectural and stylistic needs of single- and multi-family homes throughout the country. All of MI’s products are backed by a dedicated workforce committed to the highest standards of safety, quality, and customer service.


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