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Business Details
50+ Years
experience
Trusted Building Supplies Manufacturer in East Windsor, CT
Mercury Excelum has been a trusted name in exterior building products since 1953, serving homeowners, contractors, and architects across New England and New York. As a third-generation family-run business, we specialize in manufacturing and distributing high-quality windows, vinyl fencing, and railing systems designed to enhance home aesthetics and energy efficiency. Our state-of-the-art facility in East Windsor, Connecticut, ensures precision in every product, while our commitment to customer service includes detailed installation guides and local contractor referrals.

We prioritize durability and low maintenance, offering UV-resistant vinyl products that eliminate the need for staining or sealing. With decades of industry experience, we focus on delivering solutions that combine functionality with long-term value for residential and commercial projects.
Services
Windows Vinyl Railing Vinyl Fencing Installation Instructions Other Products
Details
  • Year established: 1953
Highlights and features
  • Third-generation family business with 70+ years of industry expertise.
  • Custom-manufactured products ensure precise fit and minimal installation waste.
  • UV-resistant vinyl materials eliminate fading, staining, and maintenance.
  • Comprehensive support including contractor referrals and installation guides.
  • State-of-the-art Connecticut facility guarantees quality control and innovation.
What people say
Energy-efficient windows Durable vinyl fencing Excellent customer support Custom-fit solutions Low-maintenance materials
Services
Windows
Mercury Excelum offers ENERGY STAR-certified windows including double-hung, casement, and slider styles. Our windows improve energy efficiency, reduce noise, and enhance home aesthetics. Custom sizes ensure precise installation for new construction or replacements.
Vinyl Railing
Custom vinyl railing solutions for decks, porches, and stairs. Pre-assembled systems feature UV-resistant materials, decorative accents, and aluminum reinforcement for durability without maintenance concerns.
Vinyl Fencing
Low-maintenance vinyl fencing available in multiple styles. Custom-manufactured to fit specific spaces with UV protection, fade resistance, and optional lattice or post caps for personalized designs.
Installation Instructions
Detailed installation guides for ENERGY STAR windows and railing systems. Pre-measured components and error-free assembly reduce labor time while ensuring professional results for contractors and DIYers.
Other Products
Includes exterior doors, shutters, trimline windows, and siding. Each product line focuses on durability, energy efficiency, and aesthetic complement to Mercury Excelum's core building solutions.
Questions
Why should I replace my old windows?
Old windows often cause energy loss, drafts, and condensation. Our ENERGY STAR-certified windows improve efficiency, reduce bills, and enhance home aesthetics.
What areas do you serve?
We manufacture in Connecticut and ship to installers and retailers across New England, Hudson Valley, and Westchester County.
How do I select a qualified contractor?
Verify licenses, insurance, and reviews. We recommend checking the Better Business Bureau and requesting references from past clients.
Do your products have warranties?
Yes, our vinyl fencing includes a limited lifetime transferable warranty. Windows and other products have warranties detailed in our documentation.
What is the lead time for orders?
Lead times vary seasonally. Contact customer service for current timelines, especially during peak demand periods.
What if I have issues with my windows?
Contact the retailer or contractor who sold you the windows. If unresolved, reach out to us directly for support.