Update your home with Infinity by Marvin replacement fiberglass windows and doors for low-maintenance performance with a variety of style and design options.

Built with Ultrex ®, our 100% fiberglass material, Infinity by Marvin windows transform your home with 8x the strength of vinyl. Enjoy sweeping views, unmatched comfort, and a lifetime of beauty.

Infinity Double Hung Replacement Windows utilize quality hardware and advanced design, resulting in a fiberglass window that is easy to open and clean.

Window and door replacement projects require time and energy. Let Infinity by Marvin be your window replacement guide from initial consultation to installation.

Explore customizable replacement window grilles, colors, glass, and hardware options with Infinity by Marvin. Schedule your free in-home consultation today.

Family-owned and led since 1912, Marvin has come to mean strength, quality, and doing the right thing for homeowners. Building upon this heritage, Infinity by Marvin launched as the …

Fully customizable replacement windows and doors give you a lot of options when it comes to managing your budget. Choose higher end finishes, more complex shapes, and stylized …

Infinity Replacement Casement Windows are made of Ultrex fiberglass, featuring two hinge options for easy cleaning or larger, unobstructed views.

Find a local Infinity from Marvin replacement window and door consultant near you for a hassle-free consultation and experience that will exceed your expectations.

A complete guide to caring for and maintaining your windows and patio doors. Includes tips for cleaning, painting and staining, condensation reduction, hinge adjustment, and more.