Join us for a Special Continuing Education Course for Architects with Marvin and JB Sash. Learn how applying the goals of biophilic design to windows and doors will help you cultivate well-being within the built environment for your residential clients and their families.

*Save $50 off the installation of each Marvin window or door. Minimum purchase of five (5) windows or doors by Marvin to qualify. $1,500 maximum discount per household. Mention offer code FIFTYOFF when ordering. Offer expires July 31, 2021.

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!