Welcome to Builders' General Supply Co.

With a heavy emphasis on service, Builders' General Supply Co. offers building professionals and homeowners with more than just fine building products such as Marvin Windows and Doors. We include our expertise with every order to ensure the maximum value from the vast capabilities, countless design possibilities and endless combinations that Marvin has to offer. Discover the beauty and innovation of Marvin.

We pride ourselves on helping homeowners and homebuilders realize their dreams. That’s why we’re dedicated to the success of every project we supply. Discover how we can help you realize your vision.

WIDE-OPEN POSSIBILITIES

There's a magnificent vista on the horizon. You want to knock down a wall to turn an ordinary room into an extraordinary one and redefine your family room to include indoor and outdoor living spaces. And after all that, you don't want anything to stand between you and your view. That's why Marvin designed a line of Scenic Doors. The Ultimate Lift and Slide and Bi-Fold doors are available in stunningly large sizes and numerous panel configurations, they allow for a seamless transition from the exterior to the interior of your home. Marvin's industry-exclusive hardware virtually disappears, giving you an incredibly clean and unobstructed view with simple, effortless operation.

Let more than just fresh air into your home -- with Marvin Scenic Doors, let the outdoors in.

Marvin Shades

A revolutionary innovation capable of changing the way you see the world. Marvin's fully integrated Interior Shades, blend seamlessly into your Marvin windows and doors. They operate with ease, with no cords or pulleys and feature top down, bottom up or side to side functionality based on product selection. Marvin Interior Shades are available with options to fit your needs. Choose a shade stack cover to hide your shades when not in use, select light-filtering or blackout with virtually no light bleed, and choose from 15 on-trend colors. New Shades from Marvin. A beautiful way to open up a room's possibilities.

Marvin Contemporary

Sometimes the best thing a window can do is get out of the way and connect your room with the outdoors.  Modern home designs are all about maximum light and visibility, and no windows and doors complement this better than Marvin Contemporary.  Available in a variety of styles and shapes, this collection will allow you to turn every window and door into a work or art, framing spacious views that will take your breath away.   And, our endless customization options are not only beautiful, but energy efficient, meeting or exceeding ENERGY STAR® guidelines.