Since 1947, MI Windows & Doors has been manufacturing high-quality windows designed to deliver lasting performance, energy efficiency, and exceptional value. Today, MI is one of the nation’s largest window manufacturers, offering a wide range of vinyl, aluminum, and fiberglass windows for both new construction and replacement projects. As part of MITER Brands™, MI combines decades of craftsmanship with innovative manufacturing and industry-leading quality standards.

MI windows are engineered to enhance comfort, improve energy efficiency, and complement a variety of architectural styles. With customizable colors, finishes, grille patterns, and glass options, homeowners and builders can find solutions that balance beauty, durability, and long-term performance for virtually any project.