The Nathaniel

Kasson & Keller Windows

Made in the  Northeast
for the Northeast

REPLACEMENT WINDOWS

Say goodbye to drafty windows and high energy bills with beautiful design and leading energy efficient technology that guarantees comfort and peace of mind.

NEW CONSTRUCTION WINDOWS

Beautiful design meets advanced technology for energy efficient construction with timeless visual appeal and long lasting durability.

FOR YOUR  HOME

Kas-Kel vinyl windows are available in a variety of styles, shapes and colors to suit your specific design needs.

FOR BUILDERS

Kas-Kel vinyl windows meet or exceed your local building code, install with ease, and leave customers satisfied.

Kas-Kel vinyl windows are the smart, green choice
Our custom manufacturing formula combines superior PVC compounds with innovative energy efficient technologies to produce a vinyl window that surpasses leading competitors in quality, cost-savings, and visual appeal.
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Kasson & Keller Windows

Choose your style

Double Hung Window
Double Hung Windows
Superior Ventilation
Kas-Kel double hung windows allow users to control ventilation flow with vertically sliding sashes that open from both the top and bottom.
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Casement Window
Casement/Awning Windows
Modern Utility
Kas-Kel Casement windows are versatile windows that work well in most rooms, combining beauty and high functionality.
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Rolling Sliding Window
Rolling/Sliding WIndows
Horizontal Views
Rolling windows make the most of a horizontal view while allowing for ventilation through a single or multiple sashes depending on the configuration. Maximize natural light filtration indoors with a rolling window.
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Picture Window
Picture Windows
Amazing Views
Picture windows are fixed windows that do not open but provide a large unobstructed view ideal for buildings surrounded by vast or outstanding landscapes.
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Patio Door
Patio Doors
High Preformance
One of the industry’s smoothest, best performing patio doors, at any price.
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Bay/Bow WIndow
Bay/Bow Windows
Add Depth
Bay/Bow windows add depth to a room, allowing for multi-angled daylighting and more dynamic views than flat windows can provide.
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Special Shapes
Special Shapes
Maximum Style
Specialty Shapes allow for unusual and uniquely shaped windows to function with the same energy efficiency and functional integrity as our other time-tested vinyl windows
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Kas-Kel Window
Advanced Formula PVC
Energy Efficient
Our custom manufacturing formula combines superior PVC compounds with innovative energy efficient technologies to produce a vinyl window that surpasses leading competitors in quality, cost-savings, and visual appeal.
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WARM EDGE SPACERS
Enhance Your Comfort
Windows built with Duralite® technology reduce heat transfer and help stabilize the temperature of the inner windowpane, maintaining a comfortable inside environment, condensation-free glass, and saving you money on energy costs.
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ENERGY EFFICIENT GLASS
Superior Thermal Performance
Block air leakage, eliminate cold air drafts, and maintain a comfortable inside temperature with limited risk of forming condensation or causing unnecessary extra energy cost
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Grids-Grills- Profiles
Add Style
Grids add Beauty and style to any home. Our gridds come in 2 styles and multiple patterns to fit your vision.
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Our Projects
Stunning projects for our amazing clients
Fulton County Building
Fulton County Building
Affordable Housing Project for the City of Troy, NY
Affordable Housing Project for the City of Troy, NY
Affordable Artist Housing Project for the City of Oneonta, NY
Affordable Artist Housing Project for the City of Oneonta, NY
Bissel Brothers Brewery
Bissel Brothers Brewery
Wild Oats
Wild Oats
Little Falls Housing Authority
Little Falls Housing Authority
Wedge Point Apartments
Wedge Point Apartments
Alexander Commons
Alexander Commons
Stanley Street
Stanley Street
MORE PROJECTS
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