We wouldn't be MI

If we didn't take your success personally

From our beginnings in 1947, our founders cared about delivering the best product and serving our customers at a level that couldn’t be found anywhere else. This ideal of putting people first has been ingrained in our culture from the start, and it’s one we live every day.

The MI Service Advantage

Here for you. MI team members at all levels are accessible and attentive, delivering flexibility, support, and timely solutions.

Responsive support. Our seasoned sales and service teams respond quickly and with the knowledge to help ensure every customer is treated to an exceptional experience and gets the answers they need.

Trusted partners, nationwide. Our qualified network of dealers and distributors serve as a source of local expertise, acting with a level of integrity that meets our high standards.

Simplified selection. Our straightforward product lines and simplified selection process make it easy to choose the right window with confidence.

Precision Graphic

Pursuit of 100% every day, every order

Every Order 100% Trouble-Free

“Good enough” is never good enough for us, because everything we do is focused on one number: 100%. That means getting it right, down to the smallest detail. With millions of windows manufactured each year, our commitment to 100% is no small mission – it’s a testament to our way of business – in production, delivery, and end-to-end service.

The resources to help you succeed

We do our best to create tools that make it easier for you to land more sales and please more customers. From glossy brochures to in-depth technical data, our resource library about our windows and doors offers a full range of tools to help you succeed.

Daughter Running In Front of New 1650 WindowsWe're so much more than windows. Read the MI Story to find out why.






MI-1650DH-2_In_Open_LRLearn more about our replacement & new construction products.






MI Authorized Dealer Seal

Interested in becoming and MI Dealer? Find out how.






See our products in action. View case studies.





Recent MI News

What's happening at MI? Check out our recent news.