Riverhead Building Supply is an authorized dealer of AndersenĀ® windows and doors

AndersenĀ® is the largest window and door manufacturer in North America and is the brand pros trust for dependable, high-performing windows, replacement windows, doors, parts, and accessories. We carry a full line of Andersen products including the 400 Series, A Series, and others.

Andersen is the #1 trusted window and door brand.* Andersen 400 Series are the windows contractors trust the most.** Andersen is the #1 brand for window replacement.**

* 2022 Andersen brand surveys of U.S. contractors, builders & architects. ** 2022 Andersen brand survey of U.S. contractors.

Visit a design showroom to see

Andersen products and speak with a Specialist
SHOWROOM LOCATION

Andersen windows, replacement windows, doors, parts and accessories

Andersen has beautiful windows and doors to fit any design, function, or budget. For new construction or renovations, our innovative and high-quality Andersen products are the perfect choice.


DESIGN YOUR WINDOW TO MEET
PROJECT SPECIFICATIONS


NEW CONSTRUCTION, REMODEL, & REPLACEMENT

High-quality Andersen products are the perfect choice for any design, function or budget.
  • Series ā€“ 400 Series, A-Series, and E-Series
  • Styles ā€” Casement, awning, double hung, gliding, picture, bow, bay, and specialty sizes
  • Materials ā€” Wood, vinyl, composite (FibrexĀ®), aluminum and fiberglass

Replacement windows
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Replacement window projects are easy with Andersen.

• Insert replacement windows preserve the original frame, exterior trim, exterior siding and interior casing, allowing you to get the latest window performance features while minimizing disruption to your home.

• Full-frame replacement window solutions that go well beyond standard sizing. When insert replacement windows are not an option.

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Coastal Windows
LIVE NEAR THE WATER? SPEAK WITH A WINDOW SPECIALIST TO UNDERSTAND YOUR OPTIONS

Coastal windows and doors feature StormwatchĀ® protection and are specially designed to resist impact from harsh weather.

LIVE NEAR THE WATER? SPEAK WITH A WINDOW SPECIALIST TO UNDERSTAND YOUR OPTIONS

Patio doors to large
Bi-Fold doors
DESIGN YOUR DOOR USING ANDERSEN'S PATIO AND ENTRY DOOR DESIGN TOOL

Our selection of Andersen doors includes single, multiple panel, gliding, patio doors, storm, and commercial entry styles. Choose from an array of colors, styles, sizes, materials, and finishes. Redefine boundaries with architectural lift and slide doors that open up spaces and connect your indoor areas to the outdoors.

Door and Window Parts and Accessories

Repair a window or door, or enhance its look and performance, with art glass, grilles, window hardware, handle sets, and replacement parts.

DESIGN YOUR DOOR USING ANDERSEN'S PATIO AND ENTRY DOOR DESIGN TOOL

Door and window
parts and accessories
INSTALLATION SERVICES ARE PROVIDED FOR WINDOW REPLACEMENT AND REPAIR - LEARN MORE HERE

INSTALLATION SERVICES ARE PROVIDED FOR WINDOW REPLACEMENT AND REPAIR - LEARN MORE HERE

Installation services are provided for window replacement and repair

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Learn about our many Andersen collections

ANDERSEN Ā® E-SERIES

Part of the Andersen Architectural Collection, E Series windows and doors are available in dramatic sizes and shapes, custom colors and finishes, exotic woods and more.

ANDERSENĀ® 400 SERIES

The 400 Series is Andersenā€™s most popular line of windows and doors. These products combine exceptional performance with style, and are designed to live up to the highest standards.

ANDERSENĀ® A-SERIES

Energy-efficient Andersen A-series windows and doors reflect authentic architectural style. Choose from an array of window types, wood species, interior and exterior colors and finishes, glass, and hardware.

ANDERSENĀ® 200 SERIES

Andersen 200 Series wood windows and doors are the ideal balance of design, efficiency, innovation and price. This line offers a range of popular styles and sizes.

ANDERSENĀ® 100 SERIES

Made with Andersenā€™s Revolutionary FibrexĀ® composite material, Andersen 100 series windows and patio doors deliver the craftsmanship you need for less than you may expect.

WEILAND DOORS BY ANDERSENĀ®

Redefine boundaries with architectural lift and custom sliding doors that open up spaces and connect your indoor living areas to the outdoors.

Browse our stock door & window items.

BROWSE OUR STOCK DOOR & WINDOW ITEMS

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