Have a question or concern?

Here are a few ways we can help you right away.

  • File a warranty claim using our CustomerCare Request form.
  • Find a Dealer near you who can provide local expertise and help you find the best windows.
  • For general questions and requests, complete our General Request form.
  • Call our CustomerCare Center Monday-Friday from 8:00 am-4:45 pm EST - 717.365.2500

Interested in a rewarding career with MI?

Check out our nation-wide career opportunities.

  • MI is headquartered at the Operational Support Center located at 650 W. Market St, Gratz, PA 17030.
  • We offer additional employment opportunities at our facilities throughout the United States.

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We are committed to providing you with the information and tools you need to acquire and maintain our energy efficient windows and doors.