Explore the Complete United Window & Door Product Line at Contractor Express

Thursday, July 30 | 2026

As more manufacturers move production overseas, sourcing dependable building materials made in the USA can be a challenge. Finding a high-quality manufacturer close to home can be even harder. Contractor Express is committed to developing strong relationships with both local and national manufacturers while supplying customers with quality products for new construction and renovation projects. That commitment is why we are proud to carry United Window & Door, a New Jersey-based manufacturer of vinyl windows and doors. Its extensive product line gives builders, contractors, and homeowners more options for projects of nearly every size and style.

Window Options for a Range of Projects
United Window & Door offers seven distinct window lines, along with a broad selection of finishes and configurations. Available series include:

• 3800 Series – Single Hung Flat Frame
• 3900 Series – Single Hung Brickmould Frame
• 5800 Series – Double Hung Flat Frame
• 5900 Series – Double Hung Brickmould Frame
• 6000 Series – Casement
• 7400 Series – Double Hung Beveled Frame
• 9600 Series – Double Hung Hybrid Composite

Flexible Customization Options
Homeowners and builders can tailor their selections by choosing from multiple window types, color combinations, grid styles, and grid patterns. Available options include:

• Picture, slider, and double-hung windows
• Flat or dimensional grids in farmhouse, prairie, or colonial styles
• Green and white, brick and white, clay and white, or white and white exterior and interior color schemes

Additional upgrades may be offered depending on the selected window series. With seven product lines and numerous design choices, United Window & Door makes it easier to find a solution that fits the performance needs and appearance of each project.

Sliding Patio Door Collections
United Window & Door also manufactures two sliding patio door lines designed to meet the needs of homeowners, builders, and contractors.

4500 Series Sliding Patio Door
The 4500 Series is a heavy-duty sliding glass door built for reliable everyday performance. Its durable construction is designed to handle frequent use and changing weather conditions while maintaining a polished appearance.

Key features of the 4500 Series include:

• Dual corrosion-resistant rollers
• An elegant and eye-catching design
• Welded sash and frame
• Optional right or left-handed operation
• DP-50 structural rating
• Additional customization options depending on your needs

4700 Series Sliding Patio Door
The 4700 Series offers a practical option for projects that benefit from efficient assembly. Its knockdown frame supports quicker installation, whether the work is being completed by a professional contractor or an experienced do-it-yourself homeowner. United Window & Door's patent-pending guide-pin system further streamlines the installation process.

Additional features of the 4700 Series include:

• Optional blinds between the glass panes
• Optional satin nickel or black hardware upgrades
• Effortless operation, thanks to an improved roller track system
• Modular design

Its modular design and installation-friendly features make this sliding glass door especially useful for builders working in restricted spaces or at sites with limited delivery access.

To learn more about United Window & Door products or place an order, contact Contractor Express, Long Island's leading building material supplier since 1981. Call 516-764-0388 to speak with our team about the right windows and doors for your next construction or renovation project.