New and Replacement Windows

Windows are an integral part of creating your home’s look and feel. 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. GNH is proud to carry a wide selection of Marvin® windows.

Marvin prides itself of expert craftsmanship, high-quality material, and commercial grade performance from a family owned company offering the best-in-class solutions to meet the needs of the residential market.

Marvin logo

Finding the best new or replacement windows for your home has never been easier with our streamlined and simplified process. Visit our Latham showroom to explore window options, and try them out for yourself. Then speak with our experts about window placement, style and finish options, hardware, and much more.  We keep the process of window selection easy and stress-free, so you can focus on enjoying your new windows.

Get new or replacement windows today.

Marvin Windows

Next Generation Ultimate Double Hung Window
Marvin® seamlessly transforms your home and delivers state-of-the-art technology without sacrificing the look you love. A combination of craftsmanship and quality, this brilliantly designed window brings both beauty and innovation to your home. Ask us about the Next Generation Double Hung window for your next project!

Marvin Designer Black Interior Windows

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 has entered into popularity 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.

Marvin Designer black

Marvin Interior Shades

Shades that enhance your view.
Marvin® Shades are like no other shades on the market. An exclusive innovation, Marvin’s shades are custom made for a precise fit on your Marvin windows. Available in a variety of fabric colors, top-down or bottom-up operation, no visible cords, virtually no light bleed, and no measuring required! Ask us about this option today!


Ultrex Windows

Reframe your view.
Marvin® windows, made with Ultrex pultruded fiberglass, outperform roll-form aluminum, vinyl, and vinyl/wood composites in virtually every measurable category! While other windows might bend, break, or crack over time, Marvin windows hold strong and perform under great stress without showing signs of age or wear. This means windows that will hold up for years to come – meaning no worries for you.

The Essential Collection


The All-Ultrex Series from Marvin® is made with Ultrex fiberglass inside and out. These products are built to last and to withstand little fingers, curious pets and even an impromptu game of living room football — all without sacrificing aesthetics.

The Elevate Collection


The Wood-Ultrex Series is made with the attractiveness of real wood interiors and Ultrex fiberglass exteriors for the home environment you’ve always imagined. Choose a pre-finished white interior or ready for staining pine, Wood-Ultrex windows give warmth and appeal to any home.

Marvin Insert Replacement Double Hung

Reframe your view.
This window’s frame-in-frame design is precision built to your unique window opening, allowing for a clean replacement without disturbing the existing interior or exterior trim of your home. Rich wood interior complemented by an Ultrex pultruded fiberglass exterior, this new window offers a wide array of options that blend seamlessly into the design of your home.


Window replacement is one of the best ways to increase the energy efficiency of your home while improving curb appeal at the same time. According to Energy Star, replacing single-pane windows can save up to $322 a year (or 22%) for an average household in our region…

Why Get Replacement Windows