Welcome to Mercury Excelum!

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 We originally made aluminum storm windows – thus our name Excelum derived from Excellent and Aluminum.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.    > Read More