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.


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