MAGNUM™ windows and doors, a touch of style for your home building project.

The Great Lakes Windows MAGNUM™ range of windows and doors bring style and sophistication to your residential building project. Incorporating a bold frame and sash, these window and door systems can be manufactured taller and wider than other systems on the market, giving you the opportunity to frame that perfect view. Our range includes sliding, hinged and bi-fold doors to make a unique statement in your home or building project along with sliding, awning, double hung and casement window options.