Mercury Excelum, Incorporated (MEI) was founded in Connecticut in 1953 as a manufacturer of premium quality aluminum storm windows, storm doors and related exterior building products.

Our products are manufactured in a facility located on 23 acres in East Windsor, Connecticut and we ship them from the Hudson Valley and Westchester Counties in New York up through New England.

MEI began manufacturing vinyl replacement windows in 1982 and we continue to expand our diverse product line of replacement and new construction windows, including Thermo-VyneTM and Advantage Series Windows, as well as vinyl fence and railing products.

In addition, we are a leading New England wholesale distributor of such well-known building product brands as Therma-Tru, Trimline, Geo Deck and KP Vinyl Siding.

Throughout New England and New York, MEI enjoys an established reputation for standing behind our highly regarded manufactured products and providing our customers assurance of lasting quality and value.
Are you looking for high quality windows, fence, railing, doors, siding, or decking? If yes, then you have come to the right place!

This site is designed to help you find information about the products you need. Please tour our site, gather information, formulate your questions and then call your contractor or installer who can help you with the details. As a manufacturer and distributor, we work direct with installation professionals.

We are a third-generation, family-run business that has been manufacturing windows in Connecticut since 1953! We originally made aluminum storm windows – thus our name Excelum derived from Excellent and Aluminum. Since then the industry has changed and we have evolved with it.

In addition to the aluminum storm windows and vinyl windows, railing and fence we manufacture, we are proud of our relationships as a distributor of KP Vinyl Siding, GeoDeck™ composite decking, Trimline windows, Therma-Tru entry doors and National Nail storm doors.

We take enormous pride in all the products we sell that enable you to take enormous pride in your home.

So visit, look, learn and then call your contractor and ask for products from Mercury Excelum, Inc. … products you’ll be proud to tell your friends and neighbors about after your home improvement project is  complete. 

As a third generation, family run business, we are proud of the high quality building products we both manufacture and distribute.  For over 50 years we have been helping people in our service area keep their homes warm and looking beautiful!

Whether you are ordering windows, doors, siding, railing, decking, or fence, your satisfaction is our primary concern and our customer service professionals are ready to help answer your questions or solve any issues that may arise.

Ask your contractor or building professional for products from Mercury Excelum … you’ll be glad you did!

Windows

Since 1953, Mercury Excelum has manufactured windows in a state of the art facility in Connecticut.  Our modern technical and engineering expertise  enables us to produce windows we back by a lifetime limited warranty for the vinyl extrusions and 20 years, non-prorated, for the glass.

We custom manufacture a wide selection of vinyl window shapes, styles and sizes to fit almost any opening in your home. Whether you are looking for bays, bows, casements, double-hungs, rounds, half-rounds, or others, we can custom make your windows to meet your design and energy efficiency requirements.  We also customize aluminum storm windows to complement your existing windows.

If you are looking for wood interiors, painted exteriors or other special window options, we can provide those too.  Whatever your window needs, ask your contractor for windows from Mercury.

Doors

Whether you are looking to improve the energy efficiency of your home or want to modernize your home’s appearance, Mercury Excelum, Inc has a wide selection of storm and exterior doors for you to choose from.  As a proud distributor of products from well-known manufacturers such as National Nail and Therma-Tru, we offer styles to meet all home improvement needs.