Windows & Doors

Let’s Find the Perfect Windows and Doors for your Home.

If you are building new or starting a remodeling project, new windows and doors offer the opportunity to reimagine your space. Our family-owned company thoughtfully chooses premiere products for you to choose from. We are proud to carry Marvin®, Therma-tru® doors and Simpson® doors.

Let’s make your next window and door project a success! The experts at GNH will assist you through every step of the process. We have hands-on displays for you to explore, and a design team on hand to help make your vision come to life.

Need financing options? Stop into our showroom or give us a call at 518-313-1229.

Marvin Windows & Doors logo

With Marvin, selecting the best window and door products has never been easier. From design styles and materials, to window and door options that enhance performance, Marvin offers quality products that stand the test of time.

Marvin’s three product collections – Marvin Signature®, Marvin Elevate®, and Marvin Essential – are organized by degree of design detail, flexibility, and customization possibilities. This makes it easy to create a beautiful home tailored to your unique needs.

Marvin Signature

Marvin Signature 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.

View WindowsView Doors

Marvin Elevate

Marvin Elevate 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.

View WindowsView Doors

Marvin Essential

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

View WindowsView Doors

How to Measure your Windows and Doors for Replacement

Measuring windows and doors can be a one-person job, but it will go a lot faster with a helper. Read the Full Article on Marvin’s website.

ThermaTru Doors logo

Therma-Tru exists to make you feel at home. Our doors deliver uncompromising quality, inside and out, while providing inspired designs in virtually unlimited choices. Therma-Tru makes or specifies everything that goes into our door systems. And each Therma-Tru door is backed by our lifetime limited warranty.

Our curated collections are inspired by style.

When you consider the vast array of new styles, innovative features and bold, expressive statements that you can make with Therma-Tru doors, you can see how a new door could completely change the look of your home.

Explore Therma-Tru Doors

Simpson Door Company logo
Simpson Exterior DoorsThere’s a reason why a welcome mat is placed at the front door. A door is the warm greeting as you enter the home. As the first and last impression, your front door stands for your creativity and style. Welcome beauty and quality to your home with Simpson’s comprehensive collection of front, patio or interior doors.

Simpson can provide any door, in any style or size, made from any wood and any glass. Your front door can match the others in your home, and can be built to withstand the toughest weather conditions.

Explore Simpson Doors

    Get Started Today!

    Our team is ready to get you started with your home renovation in the Capital and Hudson Valley regions of New York.


    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