Space is limited so register now. Be sure to mention JB Sash when you register to get $25 off the cost of the class. Click here for class and registration information.

Architects and Builders: Join Us for a Special New Product Education Course with Marvin and JB Sash & Door. Click to learn more.

We’ve expanded our partnership with Marvin, our premier brand for Clad, Wood, Fiberglass and Modern window and door offerings. The Marvin Showroom is now on two floors.

We’re pleased to announce that our showroom is now open to the public. Personal appointments, curbside pickup and installation services are available. Click to learn more.

Click here for COVID-19 Updates and Information


JB Sash & Door, the “Home of the Window Boys,” has been New England’s leading window and door dealer since 1940.

We offer a wide range of window and door products from the nation’s leading manufacturers, including Marvin.

Our services include:

  • Complete design services
  • Custom shop capabilities
  • Custom paint finishes
  • Unique millwork options
  • On-time delivery
  • Expert installation

Our professional staff is highly knowledgeable and trained to help you find the right products to fit your project, vision and budget. Come see us at our state-of-the-art showroom located at 280 Second Street in Chelsea, Massachusetts to get started!