Windows & Doors

Koopman Lumber operates 5 Window and Door showrooms through Massachusetts. Our expert staff and in-house consultants will work with you to pick out the best choices for your space. Let’s work together on your home!

Why Koopman for Windows and Doors?

Our company takes pride in providing top-quality service and some best in the industry windows and doors to our customers. Our staff members are not only highly educated with years of experience in their field, but they are also professionally trained to work with New England homes to ensure the perfect fit for any circumstance.

Koopman Lumber is a family-owned and operated business where we treat every customer like they are part of the family. This kind of personal touch and attention to detail set us apart from the competition, especially big box stores. Our window and door products are specially designed to fit any budget and offer the latest in design trends and energy efficiency, all backed by recognizable brand names that you can trust.

We understand that our customers have unique needs when it comes to their homes, and we strive to deliver personalized experiences that meet those needs and exceed expectations. With our commitment to quality and customer service, you can trust us to deliver the results you are looking for.

You won’t love your windows and doors more than when you buy from Koopman Lumber!

Work with us!


Koopman Lumber windows and doors department offers window options from 3 brands that we are very proud to partner with: Andersen, Marvin, and Modern View. Andersen and Marvin are both wood-clad windows, offering a protective exterior and wood interior, and Modern View offers a completely vinyl window experience. 

Which one is correct for you will depend on your home, the window location, the needs of the project, and much more. There is no one-size-fits-all when it comes to windows, and the team here at Koopman Lumber is trained in the nuances of window and project needs. No matter your budget, we will ensure you find something that works for your space, that is not only functional but beautiful as well.

Andersen oval window disaply
Row of doors in the Koopman windows and doors showroom


Koopman Lumber windows and doors department has doors for any space, interior or exterior! If you need it, we can make it happen. From bedrooms to mudrooms, sliding patio doors, and massive arching front doors, we can make any entryway a statement of excellence and allure. We supply from only our trusted vendors, which include ThermaTru, Masonite, & Jeld-Wen for exterior, and Cleary Millwork for interior doors. 

We stock a multitude of examples in our Windows & Doors showrooms and can mix and match whatever you need for your home. Styles, colors, materials, and size are no obstacle when it comes to getting you the perfect door for your space.

Therma Tru Logo
masonite logo

Still not sure about working with us? Why not give us a call and see if we can help!

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