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Quality Custom Millwork in Sugar Grove, IL. Where Promise Meets Precision

Residential Windows, Doors, Millwork.


With a range of types and styles, you’re sure to find windows to meet your home’s unique needs.


Various collections and types of Marvin doors are available to meet your home’s style and budget.

Let Us Renew Your View

Refresh your home with new Marvin windows and doors. Since 1912, Marvin has been opening new possibilities for how people live, work, think and feel. They are known for building quality products that stand the test of time. Our windows and doors provide a natural connection between indoors and outdoors, are designed to be as functional as they are beautiful and are built with exceptional craftsmanship.

Sandwich Millworks, a division of Dunaway Brothers, is your Chicagoland and surrounding suburbs residential home contractor for custom finishing and installation of replacement Marvin doors and windows. Simply set up your free consultation and the rest is as easy as 1 – 2 – 3!

We are a one-stop shop. Want a more personalized look? We offer in-house custom finishing of your windows and doors. Pick any paint or stain color, and Dunaway Brothers certified professionals will finish them right in your home or at our shop!

Choose Sandwich Millworks, a division of Dunaway Brothers

We are willing to do whatever it takes to help you achieve your home improvement goals. Acting with integrity and reliability, overcoming challenges, and providing the highest level of customer service help us build long-lasting relationships with our clients.

Not sure you can afford new windows and doors right now? We offer financing to assist you or, if you are not ready now, we will help you create a budget for your future window and door project. We’ll be here whenever you’re ready to proceed!


With our new in-house capabilities, and as an approved vendor for high-quality millwork and architectural products, our new showroom in Sugar Grove is not just a place of business but a destination for anyone looking to bring their home improvement vision to life.

Ready to Turn Your Dream Project into Reality?

(815) 786-2700


Sandwich Millworks, A division of Dunaway Brothers

1861 Old Granart Road, Unit A

Sugar Grove, IL 60554