Build It Right


Complete Your Projects On-Time with Lasting Results

Your success as a builder relies greatly on the standards you set and the businesses you choose to partner with. Count on MI windows and sliding glass doors for long-lasting beauty, performance, and energy efficiency for the homeowners who depend on you.

MI has been a trusted partner of builders since 1947. For residential and multi-family markets, MI is your single-source provider for a variety of window styles, glass and grid options, colors, and more.

A better experience. That’s MI. 

As one of the nation's largest suppliers of high-quality replacement and new construction windows and doors, backed by support that goes above and beyond, we’re here to help make every one of your projects a smooth success. MI team members at all levels are accessible and attentive, delivering the flexibility, support and timely solutions you need.

  • Qualified network of knowledgeable dealers and distributors provides local expertise and quickly gets you the answers you need
  • Exceptional quality control  at every step ensures all orders are delivered directly to your site on-time, accurate, and complete
  • Audits every hour, on every line, in every plant so you know our windows are examined and feature-complete
  • Design flexibility with on-trend styles and top-rated performance at the right price
  • 100% trouble-free guarantee
  • State-of-the-art manufacturing plants around the country to deliver what you need, where you need it
  • One of the first companies to be accepted into the AAMA 103-15 procedural certification program within the United States
  • Awarded the Best Product Award for Energy Efficiency from Builder News Magazine for the MI EnergyCore Window System

For Professionals

Satisfied Homeowner

Your single-source - for the style, performance and value you want.