JB Sash is proud to be New England’s largest independent window and door dealer. (Photo courtesy of HC Design)

We have been supplying architects, contractors and homeowners with the finest quality products for over 75 years. (Photo courtesy of HC Design)

From windows and doors to skylights and millwork, we can help you make your vision a reality.


Experience, Customer Service and Flexibility are the hallmarks of JB Sash.
We have been leaders in the window and door business for 75 years.

Our professional staff is highly knowledgeable and trained to help you find the right products for any project. We offer an extensive range of services including shop drawings, custom carpentry, delivery and installation.
In addition to an onsite manufacturing facility and warehouse, our convenient Chelsea location features a beautiful showroom which is open to the public.

No matter what you’re looking for, JB Sash can either order it or make it
… to your specifications.