New and Replacement Windows for your Home

New and replacement windows can dramatically enhance the look and feel of your home. They can also increase your home’s value and add energy efficiency. With GNH’s Design Showroom, finding the best new or replacement windows for your home has never been easier. Stop into our Latham showroom to see and touch the window displays. Then our experts can help answer your questions about window placement, style and finish options, hardware, and more.

Our GNH team members are experienced in working with homeowners and builders to ensure your vision becomes a reality. We are proud to carry a wide selection of Marvin® windows and look forward to helping you select the best one to fit your needs.

Marvin  logo

Warm sunlight, fresh air and a connection to the natural world can instantly change the mood of a home. Marvin designs windows to make that connection feel seamless.

The Marvin portfolio of products is organized into three product collections–defined by the degree of design detail and customization opportunities. Our thoughtful solutions provide exceptional performance, energy efficiency, low maintenance, and quality you can see, feel, and touch, to help bring your vision to life.

Marvin Signature®

Marvin Signature collection offers beautiful design, innovative touches and a wide range of options. Experience the difference in every thoughtful detail, with the highest level of architectural precision and beautiful aesthetics when exploring the products in Marvin Signature collection.

Marvin Signature ultimate collectionMarvin Signature® Ultimate

Marvin Signature Ultimate collection is made for those who care about every detail and simply won’t compromise on their vision. With extensive customization opportunities and versatility across architectural styles, Ultimate windows can be used in a wide range of projects, including traditional, contemporary, transitional, historic, craftsman, or whatever style inspires you.

Marvin Signature Ultimate windows are available in a range of wood species and a variety of stains and paint options. We sand, condition, stain and oven-cure each individual piece of wood, providing a rich interior finish. You’ll feel Marvin Signature Ultimate quality in simple and smart innovations like Lift Lock hardware, which allows for easy access to open and lock a window. And if you can’t find what you’re looking for, we can help you make nearly anything you can imagine.

Marvin's Signature Modern CollectionMarvin Signature® Modern

Marvin Signature Modern is stunning in both its design and engineering. Low-gloss aluminum interiors—along with black spacer bars and black sealant—minimize visual distractions on the frame and enhance the flow of natural light. Internal covers completely disguise fasteners and conceal rubber gaskets to help products maintain clean, crisp edges.

Marvin Signature Modern Windows are manufactured from an innovative high-density fiberglass material. With its leading thermal performance, consistent narrow sightlines, and a modular system to enable an intuitive installation these features all add up to a seamless approach to modern window design.

Marvin Elevate®Marvin Elevate collection

Marvin Elevate collection features warm wood interiors paired with strong, durable, Ultrex® fiberglass exteriors. This provides an ideal combination of beauty and strength—giving warmth and appeal to any home.

This collection offers a range of carefully selected features and options, making it as versatile as it is elegant. Choose a pre-finished white interior, bare pine ready for staining, clear coat wood, or designer black. There is also a variety of hardware finishes and exterior colors (Stone White, Cashmere, Pebble Gray, Evergreen, Bronze, and Ebony) to choose from. Add Divided Lites or Simulated Checkrail to complete the look of your new or replacement windows.

Ultrex® fiberglass exteriors are designed to be durable. It has a tensile strength 8x stronger than vinyl and 3x stronger than non-fiberglass vinyl or wood composites. The Elevate Collection is backed by a fully transferable 20/10 warranty—20-year coverage on glass, and 10-year coverage on manufacturing materials and workmanship.

Marvin EssentialMarvin Essential collection

Marvin Essential collection features clean lines, streamlined options, and powerful performance. These windows are made with strong, durable, Ultrex® fiberglass interiors and exteriors.

Choose from a variety of hardware finishes, interior colors (Stone White, Bronze, and Ebony), and exterior colors (Stone White, Cashmere, Pebble Gray, Evergreen, Bronze, and Ebony) and Divided Lites to match your home’s design or create your own vision.

Unlike other composites, Marvin Essential collection windows resist cracking and separating. How? The exterior and interior frames expand and contract at virtually the same rate as glass, so it works with the glass rather than against it. As a result, seals aren’t as prone to leaking and windows aren’t subjected to sagging issues like other composites such as vinyl.

Windows made with Ultrex® resist scratches, dings, and marring more than vinyl. The Essential collection is backed by a fully transferable 20/10 warranty—20-year coverage on glass, and 10-year coverage on manufacturing materials and workmanship.

Plus, the top-rated Energy Savings Ultrex® fiberglass provides an insulated barrier against extreme weather temperatures. This keeps your home comfortable while reducing heating and cooling costs.

Marvin Designer Black Interior WindowsMarvin Ultimate Multi Sliding Doors

Marvin Designer Black: It’s not a color. It’s an attitude.

It is the complete absence of light, the epitome of sophistication. Black is modern, yet timeless. It transcends the ranks of fashion and is popular as a home interior finish. As with all Marvin paint and prime systems, Designer Black provides a durable and long-lasting finish on each piece.

Learn more about Marvin’s Designer Black

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    FREE GUIDE"Benefits of New Windows"

    Learn why new windows are a great investment with our FREE guide!

    Are new windows worth the cost? How much value will it add to your home? What are the potential energy efficiency savings?


    • Energy and cost savings.
    • Home resale value increase.
    • Aesthetic improvement