Build with the best for less.
Now through Dec 15th, save 10% on the Marvin Elevate Collection of windows and doors.


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Marvin Signature Modern Direct Glaze Assembly

Marvin Signature® Collection

The Marvin Signature collection includes the Ultimate and Modern product lines and can make your highest design aspirations possible— from dramatic window walls with a purely modern aesthetic to the intricate details of a historic Victorian home. These collection offers you the broadest range of window and door types, sizes, styles, and options—if you can dream it, Marvin can create it.

Marvin Elevate® Collection

The Marvin Elevate® collection is an ideal blend of remarkable design and superior strength, bringing balance to your style and performance needs. Proprietary fiberglass exteriors stand up to all elements, outperforming and outlasting vinyl, roll-form aluminum and other composites. Warm wood interiors add timeless beauty, while resilient, long-lasting fiberglass stays strong in even the toughest conditions.

Marvin Elevate Casement Window (simulated to look like a double-hung window)


Marvin Essential Single-hung Window

Marvin Essential™ Collection

The Marvin Essential™ collection brings together design, quality, and performance in one streamlined offering. Strong, durable fiberglass exteriors and interiors are both striking and virtually maintenance-free. Simplified options make the order process straightforward, while clean lines and versatile styles make it easy to meet project demands.


Skycove is a projected glass structure that provides expansive views and captures light from three sides and from above. It’s an intimate space to relax and recharge. While cozy for one, the seat can reach up to 20 square feet, which is large enough for multiple people. 

Visit us to find out how this glowing architectural statement piece can bring a sense of luxury to your next project. 


Marvin Skycove


Sanford Hills Picture Window with grilles between the glass

Mathews Brothers Sanford Hills Collection

This unique design combines the traditional historic look of wood with the superior, energy-efficient performance of vinyl. This range comes with the standard 6.0 rating from Energy Star, ensuring you get the most bang for your buck. These windows are backed by the same lifetime warranty offered by Mathews Brothers, which proves why they have remained at the forefront of the window industry for so many years.

Mathews Brothers Spencer Walcott Collection

These beautifully styled vinyl windows provide superior quality and are a state-of-the-art product. Dedicated to excellence, they combine experience, technology and superior craftsmanship to produce exceptional product lines. They understand that homeowners demand premier quality vinyl windows that conform to the industry’s highest performance standards.


Spencer Walcott Double-hung Window

JB Sash Proper Bostonian

At JB Sash, we have been designing, building, painting and installing historically accurate windows in Boston and surrounding areas for more than 80 years.

Our custom reproductions can match existing windows and fit any brick or wood opening. We’ll work to secure necessary permits and help ensure your project is granted historic approval.

Visit Our Showroom

Our two-story design center and Marvin showroom is conveniently located minutes from downtown Boston. With designated parking and a team of experts waiting to greet you, it’s never been easier to take the first step in transforming you space with JB Sash & Door.